Exhibit 99.1

		NEWS RELEASE

FOR RELEASE: IMMEDIATE

GATX CORPORATION REPORTS 2010 FOURTH QUARTER AND FULL-YEAR RESULTS

     CHICAGO, January 20 — GATX Corporation (NYSE:GMT) today reported 2010 fourth quarter net income of $19.5 million or $.42 per diluted share, compared to net income of $21.5 million or $.45 per diluted share in the fourth quarter of 2009. The 2010 fourth quarter results include a tax benefit of $5.8 million or $.12 per diluted share, partially offset by negative fair-value adjustments on interest rate swaps at GATX’s European rail affiliate, AAE Cargo (AAE) of $1.3 million or $.03 per diluted share. The 2009 fourth quarter results include a $7.4 million or $.15 per diluted share tax benefit and negative fair-value adjustments of $2.2 million or $.05 per diluted share related to the AAE interest rate swaps.

     Net income for the full-year 2010 was $80.8 million or $1.72 per diluted share, compared to net income of $81.4 million or $1.70 per diluted share in the prior year. The 2010 results include a net positive impact of $6.2 million or $.13 per diluted share related to tax benefits and the favorable resolution of a litigation matter, partially offset by the negative fair-value adjustments on interest rate swaps at AAE. The 2009 results include a net negative impact of $13.3 million or $.27 per diluted share related to the AAE interest rate swaps, partially offset by a tax benefit.

     Brian A. Kenney, president and chief executive officer of GATX, said, “Our 2010 results are in line with our original expectations. In 2010, we focused on fleet utilization, cost containment and asset growth, and we executed in all three areas. Rail’s North American fleet utilization increased again in the fourth quarter, ending the year at 97.4% compared to 95.9% at the end of 2009. We managed our maintenance and SG&A costs effectively, especially with the volatile rail market producing a high level of churn in our fleet. In addition, we successfully acquired an interest in approximately 8,000 existing railcars at attractive prices through two large transactions. In total, investment volume was $585 million in 2010, up significantly from 2009.”

     Mr. Kenney continued, “Looking forward, although absolute railcar lease rates are increasing, the rollover effect of leases renewing at rates lower than expiring rates will continue to pressure revenue. Our marine joint ventures will also see continued pressure on charter rates reflecting continued low demand and overcapacity in most marine sectors. We expect stable performance from American Steamship Company in 2011. On the positive side, we expect to realize continued low funding costs and an increase in attractive asset remarketing opportunities.”

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     Mr. Kenney concluded, “As a result of this outlook, we currently expect 2011 earnings to be in the range of $1.70 — $1.80 per diluted share. In the year ahead, GATX will focus on lease pricing improvement, effective asset remarketing and asset growth opportunities. Successful execution on these initiatives and continued improvement in our markets will enhance our long-term performance.”

RAIL

     Rail segment profit was $39.2 million in the fourth quarter of 2010, compared to $33.9 million in the fourth quarter of 2009. The fourth quarter 2010 and 2009 results include negative pre-tax adjustments of $1.5 million and $2.4 million, respectively, related to the change in fair value of interest rate swaps at AAE. Rail reported segment profit of $150.6 million in 2010, compared to $169.1 million in 2009. The 2010 and 2009 results include negative pre-tax adjustments of $10.4 million and $24.4 million, respectively, related to the AAE interest rate swaps. The reduction in segment profit was driven by the year-over-year decline in lease income as there were fewer average active cars in the North American fleet and lease rates on renewals were generally lower throughout 2010.

     At December 31, 2010, Rail’s North American fleet totaled approximately 111,000 cars. Fleet utilization was 97.4% , up from 96.8% at the end of the third quarter and 95.9% at 2009 year end. The European wholly-owned tank car fleet totaled approximately 20,000 cars and utilization was 95.7%, up from 95.3% at the end of the third quarter and 94.7% at 2009 year end.

     During the fourth quarter of 2010, lease renewal pricing on cars in the Lease Price Index (LPI) decreased 14.0% versus expiring lease rates, compared to a 15.7% decrease in the prior quarter and an 18.7% decrease in the fourth quarter 2009. The average lease term on LPI renewals during the fourth quarter was 36 months, consistent with the prior quarter and down from 43 months in the fourth quarter of 2009. For the full-year 2010, lease renewal rates on cars in the LPI decreased 15.8% versus expiring rates with an average renewal term of 35 months. This compares with an average renewal rate decrease of 11.0% and average renewal term of 41 months in 2009. Total investment volume in 2010 at Rail was $475 million, compared to $345 million in 2009.

     Additional current and historical fleet and operating data as well as macroeconomic data related to Rail’s business can be found on the last page of this press release.

SPECIALTY

     Specialty reported segment profit of $8.5 million in the fourth quarter of 2010 compared to $8.1 million in the prior year period. For 2010, Specialty reported segment profit of $48.7 million, compared to $51.6 million in 2009. Lower remarketing income and lower share of affiliates’ earnings from the marine joint ventures contributed to the decline in segment profit year over year.

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     The Specialty portfolio currently consists of approximately $744.4 million of owned assets (including on and off balance sheet assets) and third-party managed portfolios totaling approximately $241.9 million.

AMERICAN STEAMSHIP COMPANY

     American Steamship Company (ASC) reported segment profit of $6.6 million in the fourth quarter 2010 compared to $6.0 million in the fourth quarter 2009. Segment profit for 2010 was $28.6 million compared to $16.1 million in 2009. The full-year segment profit increase was driven by a 32% increase in tonnage carried in 2010 versus 2009, primarily due to greater demand for iron ore shipments. During the current winter lay-up season, ASC will work with its customers to gauge volume expectations for 2011 and plan winter maintenance and future vessel deployment accordingly.

COMPANY DESCRIPTION

     GATX Corporation (NYSE:GMT) provides leasing and related services to customers operating rail, marine and other targeted assets. GATX is a leader in leasing transportation assets and controls one of the largest railcar fleets in the world. Applying over a century of operating experience and strong market and asset expertise, GATX provides quality assets and services to customers worldwide. GATX has been headquartered in Chicago, Illinois since its founding in 1898 and has traded on the New York Stock Exchange since 1916. For more information, visit the Company’s website at www.gatx.com.

TELECONFERENCE INFORMATION

GATX Corporation will host a teleconference to discuss 2010 fourth quarter and full-year results. Teleconference details are as follows:

Thursday, January 20^th
11:00 A.M. Eastern Time
Domestic Dial-In: 1-888-634-9984
International Dial-In: 1-719-457-2633
Replay: 1-888-203-1112 or 1-719-457-0820 /Access Code: 8245933

Call-in details, a copy of this press release and real-time audio access are available at www.gatx.com. Please access the call 15 minutes prior to the start time. Following the call, a replay will be available on the same site.

FORWARD-LOOKING STATEMENTS

This document contains statements that may constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 and are subject to the safe harbor provisions of those sections and the Private Securities Litigation Reform Act of 1995. Some of these statements may be identified by words such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “predict,” “project” or other words and terms of similar meaning. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, including those described in GATX’s Annual Report on Form 10-K and other filings with the SEC, and that actual results or

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developments may differ materially from those in the forward-looking statements. Specific factors that might cause actual results to differ from expectations include, but are not limited to, general economic, market, regulatory and political conditions in the rail, marine, industrial and other industries served by GATX and its customers; lease rates, utilization levels and operating costs in GATX’s primary operating segments; conditions in the capital markets; changes in GATX’s credit ratings and financing costs; regulatory rulings that may impact the economic value and operating costs of assets; competitive factors in GATX’s primary markets including lease pricing and asset availability; changes in loss provision levels within GATX’s portfolio; impaired asset charges that may result from changing market conditions or portfolio management decisions implemented by GATX; the opportunity for remarketing income and the outcome of pending or threatened litigation. Given these risks and uncertainties, readers are cautioned not to place undue reliance on these forward-looking statements, which reflect management’s analysis, judgment, belief or expectation only as of the date hereof. GATX has based these forward-looking statements on information currently available and disclaims any intention or obligation to update or revise these forward-looking statements to reflect subsequent events or circumstances.

FOR FURTHER INFORMATION CONTACT:

GATX Corporation
Jennifer Van Aken
312-621-6689
jennifer.vanaken@gatx.com

Investor, corporate, financial, historical financial, photographic and news release information may be found at www.gatx.com.

(1/20/11)

—Tabular Follows—

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GATX CORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
(In Millions, Except Per Share Data)

		Three Months Ended								Twelve Months Ended
		December 31								December 31
		2010				2009				2010				2009
Gross Income
Lease income		$	222.5			$	226.2			$	873.5			$	905.1
Marine operating revenue			59.8				52.7				185.3				128.4
Asset remarketing income			3.0				4.6				31.4				29.8
Other income			21.0				19.0				76.6				61.6
Revenues			306.3				302.5				1,166.8				1,124.9
Share of affiliates’ earnings			7.5				6.0				38.1				29.0
Total Gross Income			313.8				308.5				1,204.9				1,153.9
Ownership Costs
Depreciation			55.9				55.9				217.0				217.7
Interest expense, net			42.0				42.4				167.1				167.5
Operating lease expense			35.8				34.9				140.2				136.6
Total Ownership Costs			133.7				133.2				524.3				521.8
Other Costs and Expenses
Maintenance expense			68.3				73.7				267.0				269.0
Marine operating expense			43.9				36.2				129.1				87.2
Selling, general and administrative			37.5				25.9				134.8				127.8
Other			12.8				18.0				52.3				40.2
Total Other Costs and Expenses			162.5				153.8				583.2				524.2
Income before Income Taxes			17.6				21.5				97.4				107.9
Income Tax (Benefit) Provision			(1.9	)			—				16.6				26.5
Net Income		$	19.5			$	21.5			$	80.8			$	81.4

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GATX CORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
(In Millions, Except Per Share Data)
(Continued)

		Three Months Ended								Twelve Months Ended
		December 31								December 31
		2010				2009				2010				2009
Per Share Data
Basic		$	0.42			$	0.47			$	1.75			$	1.74
Average number of common shares			46.2				45.9				46.1				46.6
Diluted		$	0.42			$	0.45			$	1.72			$	1.70
Average number of common shares and common share equivalents			46.8				48.1				47.0				48.8
Dividends declared per common share		$	0.28			$	0.28			$	1.12			$	1.12

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GATX CORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (UNAUDITED)
(In Millions)

		December 31				December 31
		2010				2009
Assets
Cash and Cash Equivalents		$	78.5			$	41.7
Restricted Cash			56.6				33.2
Receivables
Rent and other receivables			71.1				68.7
Finance leases			347.7				309.7
Less: allowance for possible losses			(11.6	)			(13.4	)
			407.2				365.0
Operating Lease Assets, Facilities and Other
Rail			5,513.6				5,449.0
Specialty			280.8				245.4
ASC			389.1				380.2
Less: allowance for depreciation			(2,049.7	)			(2,041.3	)
			4,133.8				4,033.3
Investments in Affiliated Companies			486.1				452.2
Goodwill			92.7				97.5
Other Assets			187.5				183.5
Total Assets		$	5,442.4			$	5,206.4
Liabilities and Shareholders’ Equity
Accounts Payable and Accrued Expenses		$	114.6			$	123.0
Debt
Commercial paper and borrowings under bank credit facilities			115.6				70.8
Recourse			2,801.8				2,553.0
Nonrecourse			217.2				234.2
Capital lease obligations			41.9				54.8
			3,176.5				2,912.8
Deferred Income Taxes			750.6				730.6
Other Liabilities			287.0				337.4
Total Liabilities			4,328.7				4,103.8
Total Shareholders’ Equity			1,113.7				1,102.6
Total Liabilities and Shareholders’ Equity		$	5,442.4			$	5,206.4

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GATX CORPORATION AND SUBSIDIARIES
SEGMENT DATA (UNAUDITED)
Three Months Ended December 31, 2010
(In Millions)

																		GATX
		Rail				Specialty				ASC				Other				Consolidated
Gross Income
Lease income		$	206.7			$	14.8			$	1.0			$	—			$	222.5
Marine operating revenue			—				—				59.8				—				59.8
Asset remarketing income			1.9				1.1				—				—				3.0
Other income			18.3				0.5				0.2				2.0				21.0
Revenues			226.9				16.4				61.0				2.0				306.3
Share of affiliates’ earnings			(0.6	)			8.1				—				—				7.5
Total Gross Income			226.3				24.5				61.0				2.0				313.8
Ownership Costs
Depreciation			47.6				4.5				3.8				—				55.9
Interest expense, net			31.6				7.2				2.0				1.2				42.0
Operating lease expense			35.5				0.4				—				(0.1	)			35.8
Total Ownership Costs			114.7				12.1				5.8				1.1				133.7
Other Costs and Expenses
Maintenance expense			63.6				—				4.7				—				68.3
Marine operating expense			—				—				43.9				—				43.9
Other			8.8				3.9				—				0.1				12.8
Total Other Costs and Expenses			72.4				3.9				48.6				0.1				125.0
Segment Profit		$	39.2			$	8.5			$	6.6			$	0.8				55.1
Selling, general and administrative																			37.5
Income before Income Taxes																			17.6
Income Tax Benefit																			(1.9	)
Net Income																		$	19.5
Selected Data:
Investment Volume		$	293.1			$	44.8			$	1.7			$	1.0			$	340.6
Asset Remarketing Income:
Disposition Gains on Owned Assets			1.9				—				—				—				1.9
Residual Sharing Income			—				1.1				—				—				1.1
Total Asset Remarketing Income		$	1.9			$	1.1			$	—			$	—			$	3.0
Scrapping Gains (a)		$	4.8				—				—				—			$	4.8

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GATX CORPORATION AND SUBSIDIARIES
SEGMENT DATA (UNAUDITED)
Twelve Months Ended December 31, 2010
(In Millions)

																		GATX
		Rail				Specialty				ASC				Other				Consolidated
Gross Income
Lease income		$	813.3			$	56.1			$	4.1			$	—			$	873.5
Marine operating revenue			—				—				185.3				—				185.3
Asset remarketing income			17.4				14.0				—				—				31.4
Other income			72.3				1.0				0.2				3.1				76.6
Revenues			903.0				71.1				189.6				3.1				1,166.8
Share of affiliates’ earnings			1.2				36.9				—				—				38.1
Total Gross Income			904.2				108.0				189.6				3.1				1,204.9
Ownership Costs
Depreciation			188.8				17.5				10.7				—				217.0
Interest expense, net			127.1				28.2				8.3				3.5				167.1
Operating lease expense			139.1				1.4				—				(0.3	)			140.2
Total Ownership Costs			455.0				47.1				19.0				3.2				524.3
Other Costs and Expenses
Maintenance expense			254.1				—				12.9				—				267.0
Marine operating expense			—				—				129.1				—				129.1
Other			44.5				12.2				—				(4.4	)			52.3
Total Other Costs and Expenses			298.6				12.2				142.0				(4.4	)			448.4
Segment Profit		$	150.6			$	48.7			$	28.6			$	4.3				232.2
Selling, general and administrative																			134.8
Income before Income Taxes																			97.4
Income Tax Provision																			16.6
Net Income																		$	80.8
Selected Data:
Investment Volume		$	474.6			$	97.4			$	9.0			$	4.1			$	585.1
Asset Remarketing Income:
Disposition Gains on Owned Assets			17.4				6.4				—				—				23.8
Residual Sharing Income			—				7.6				—				—				7.6
Total Asset Remarketing Income		$	17.4			$	14.0			$	—			$	—			$	31.4
Scrapping Gains (a)		$	18.0				—				—				—			$	18.0

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GATX CORPORATION AND SUBSIDIARIES
SEGMENT DATA (UNAUDITED)
Three Months Ended December 31, 2009
(In Millions)

																		GATX
		Rail				Specialty				ASC				Other				Consolidated
Gross Income
Lease income		$	210.2			$	15.0			$	1.0			$	—			$	226.2
Marine operating revenue			—				—				52.7				—				52.7
Asset remarketing income			2.6				2.0				—				—				4.6
Other income			18.1				0.6				0.2				0.1				19.0
Revenues			230.9				17.6				53.9				0.1				302.5
Share of affiliates’ earnings			(1.3	)			7.3				—				—				6.0
Total Gross Income			229.6				24.9				53.9				0.1				308.5
Ownership Costs
Depreciation			48.1				4.1				3.7				—				55.9
Interest expense, net			33.0				7.2				2.2				—				42.4
Operating lease expense			34.6				0.4				—				(0.1	)			34.9
Total Ownership Costs			115.7				11.7				5.9				(0.1	)			133.2
Other Costs and Expenses
Maintenance expense			68.0				—				5.7				—				73.7
Marine operating expense			—				—				36.2				—				36.2
Other			12.0				5.1				0.1				0.8				18.0
Total Other Costs and Expenses			80.0				5.1				42.0				0.8				127.9
Segment Profit (Loss)		$	33.9			$	8.1			$	6.0			$	(0.6	)			47.4
Selling, general and administrative																			25.9
Income before Income Taxes																			21.5
Income Tax Provision																			—
Net Income																		$	21.5
Selected Data:
Investment Volume		$	68.0			$	33.6			$	0.3			$	2.0			$	103.9
Asset Remarketing Income:
Disposition Gains on Owned Assets			0.2				0.3				—				—				0.5
Residual Sharing Income			2.4				1.7				—				—				4.1
Total Asset Remarketing Income		$	2.6			$	2.0			$	—			$	—			$	4.6
Scrapping Gains (a)		$	3.5				—				—				—			$	3.5

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GATX CORPORATION AND SUBSIDIARIES
SEGMENT DATA (UNAUDITED)
Twelve Months Ended December 31, 2009
(In Millions)

																		GATX
		Rail				Specialty				ASC				Other				Consolidated
Gross Income
Lease income		$	844.5			$	56.5			$	4.1			$	—			$	905.1
Marine operating revenue			—				—				128.4				—				128.4
Asset remarketing income			14.0				15.8				—				—				29.8
Other income			57.9				2.4				0.2				1.1				61.6
Revenues			916.4				74.7				132.7				1.1				1,124.9
Share of affiliates’ earnings			(10.1	)			39.1				—				—				29.0
Total Gross Income			906.3				113.8				132.7				1.1				1,153.9
Ownership Costs
Depreciation			189.1				18.6				10.0				—				217.7
Interest expense, net			128.7				26.8				9.0				3.0				167.5
Operating lease expense			135.5				1.4				—				(0.3	)			136.6
Total Ownership Costs			453.3				46.8				19.0				2.7				521.8
Other Costs and Expenses
Maintenance expense			253.1				—				15.9				—				269.0
Marine operating expense			—				—				87.2				—				87.2
Other			30.8				15.4				(5.5	)			(0.5	)			40.2
Total Other Costs and Expenses			283.9				15.4				97.6				(0.5	)			396.4
Segment Profit (Loss)		$	169.1			$	51.6			$	16.1			$	(1.1	)			235.7
Selling, general and administrative																			127.8
Income before Income Taxes																			107.9
Income Tax Provision																			26.5
Net Income																		$	81.4
Selected Data:
Investment Volume		$	345.3			$	119.5			$	7.2			$	8.4			$	480.4
Asset Remarketing Income:
Disposition Gains on Owned Assets			7.5				3.5				—				—				11.0
Residual Sharing Income			6.5				12.3				—				—				18.8
Total Asset Remarketing Income		$	14.0			$	15.8			$	—			$	—			$	29.8
Scrapping Gains (a)		$	9.7				—				—				—			$	9.7

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GATX CORPORATION AND SUBSIDIARIES
SUPPLEMENTAL INFORMATION (UNAUDITED)
(In Millions, Except Leverage)

		12/31/2009				3/31/2010				6/30/2010				9/30/2010				12/31/2010
Assets by Segment (includes off-balance sheet assets)
Rail		$	5,110.4			$	4,998.1			$	4,899.7			$	4,978.0			$	5,189.9
Specialty			676.0				693.8				691.5				713.8				728.1
ASC			269.0				260.3				285.5				274.3				271.1
Other			92.2				90.3				89.5				94.7				89.7
Total Assets, Excluding Cash		$	6,147.6			$	6,042.5			$	5,966.2			$	6,060.8			$	6,278.8
Non-performing Investments		$	18.2			$	17.8			$	17.4			$	17.1			$	16.7
Capital Structure
Commercial Paper and Bank Credit Facilities, Net of Unrestricted Cash		$	29.1			$	(132.4	)		$	72.0			$	48.4			$	37.1
On Balance Sheet Recourse Debt			2,553.0				2,764.1				2,515.3				2,534.6				2,801.8
On Balance Sheet Nonrecourse Debt			234.2				226.9				225.2				222.7				217.2
Off Balance Sheet Recourse Debt			813.0				742.6				746.3				787.4				782.8
Off Balance Sheet Nonrecourse Debt			203.1				200.3				197.8				195.5				188.7
Capital Lease Obligations			54.8				53.4				52.0				50.3				41.9
Total Borrowings, Net of Unrestricted Cash		$	3,887.2			$	3,854.9			$	3,808.6			$	3,838.9			$	4,069.5
Total Recourse Debt (a)		$	3,449.9			$	3,427.7			$	3,385.6			$	3,420.7			$	3,663.6
Shareholders’ Equity		$	1,102.6			$	1,096.2			$	1,044.9			$	1,098.6			$	1,113.7
Recourse Leverage			3.1				3.1				3.2				3.1				3.3

GATX CORPORATION AND SUBSIDIARIES
SUPPLEMENTAL INFORMATION (UNAUDITED)
(Continued)

		12/31/2009				3/31/2010				6/30/2010				9/30/2010				12/31/2010
North American Rail Statistics (wholly-owned fleet)
Lease Price Index (LPI) (a)
Average Renewal Lease Rate Change			-18.7	%			-15.2	%			-18.6	%			-15.7	%			-14.0	%
Average Renewal Term (months)			43				31				36				36				36
Fleet Rollforward
Beginning Balance			111,206				110,870				108,918				108,626				108,800
Cars Added			774				346				434				1,189				3,479
Cars Scrapped			(1,108	)			(1,026	)			(726	)			(917	)			(870	)
Cars Sold			(2	)			(1,272	)			—				(98	)			(20	)
Ending Balance			110,870				108,918				108,626				108,800				111,389
Utilization			95.9	%			96.0	%			96.5	%			96.8	%			97.4	%
GATX Rail Europe Statistics (wholly-owned fleet)
Fleet Rollforward
Beginning Balance			20,005				20,033				20,321				20,302				20,226
Cars Added			100				288				15				61				298
Cars Scrapped/Sold			(72	)			—				(34	)			(137	)			(92	)
Ending Balance			20,033				20,321				20,302				20,226				20,432
Utilization			94.7	%			94.4	%			94.4	%			95.3	%			95.7	%
Rail Industry Statistics
Manufacturing Capacity Utilization Index (b)			71.6	%			72.8	%			74.2	%			75.3	%			76.0	%
Year-over-year Change in U.S. Carloadings (total, excl. intermodal) (c)			-16.1	%			2.2	%			7.8	%			7.2	%			7.3	%
Year-over-year Change in U.S. Carloadings (chemical) (c)			-9.6	%			13.5	%			12.8	%			10.2	%			9.6	%
Year-over-year Change in U.S. Carloadings (petroleum products) (c)			-11.1	%			2.0	%			4.9	%			4.9	%			5.9	%
Production Backlog at Railcar Manufacturers (d)			10,462				12,990				14,930				19,267				n/a	(e)
American Steamship Company (ASC) Statistics
Total Net Tons Carried (millions)			8.6				1.3				8.3				9.9				8.5