<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>c16381exv23w1.txt
<DESCRIPTION>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
<TEXT>
<PAGE>

                                                                    EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 33-41007) pertaining to the GATX Corporation Salaried Employees
Retirement Savings Plan, of our report dated June 19, 2007, with respect to the
financial statements and schedule of the GATX Corporation Salaried Employees
Retirement Savings Plan included in this Annual Report (Form 11-K) for the year
ended December 31, 2006.

                                                   /s/ Ernst & Young LLP
                                                   -------------------------
                                                   Ernst & Young LLP

June 25, 2007
Chicago, Illinois
</TEXT>
</DOCUMENT>