FILED PURSUANT TO RULE 433
                                                     REGISTRATION NO. 333-145521
                                                                FEBRUARY 1, 2008

                               PRICING TERM SHEET

                          6.000% SENIOR NOTES DUE 2018


                              
ISSUER:                          GATX Corporation

SECURITY:                        6.000% Senior Notes due 2018

SIZE:                            $200,000,000

MATURITY DATE:                   February 15, 2018

COUPON:                          6.000%

INTEREST PAYMENT DATES:          February 15 and August 15, commencing
                                 August 15, 2008

PRICE TO PUBLIC:                 99.448%

BENCHMARK TREASURY:              UST 4.250% due November 2017

BENCHMARK TREASURY YIELD:        3.574%

SPREAD TO BENCHMARK TREASURY:    +250 bp

YIELD:                           6.074%

MAKE-WHOLE CALL:                 T+37.5 bp

EXPECTED SETTLEMENT DATE:        February 6, 2008 (T+3)

CUSIP:                           361448 AF0

ANTICIPATED RATINGS:             Baa1 (stable) by Moody's Investors Service, Inc.
                                 BBB+ (stable) by Standard & Poor's Ratings Services

JOINT BOOK-RUNNING MANAGERS:     Citigroup Global Markets Inc.
                                 J.P. Morgan Securities Inc.

LEAD MANAGER:                    Banc of America Securities LLC

CO-MANAGERS:                     BMO Capital Markets Corp.
                                 Piper Jaffray & Co.



Note: A securities rating is not a recommendation to buy, sell or hold
securities and may be subject to revision or withdrawal at any time.

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