X0303 4 2009-10-29 0000350698 AUTONATION, INC. AN 0001052192 CASCADE INVESTMENT LLC 2365 CARILLON POINT KIRKLAND WA 98033 1 (See footnote 3) 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 Common Stock 2009-10-29 4 P 0 483800 17.6081 A 11849488 D Common Stock 2009-10-29 4 P 0 16200 18.2172 A 11865688 D This transaction was executed in multiple trades at prices ranging from $17.19 to $18.185. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. This transaction was executed in multiple trades at prices ranging from $18.19 to $18.285. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. The reporting person may be deemed to be a member of a Section 13(d) group that beneficially owns more than 10% of the issuer's outstanding Common Stock. This report shall not be deemed an admission that the reporting person and any other person or persons in fact constitute a "group" for purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, and the reporting person disclaims that it is the beneficial owner of securities owned by such other person or persons, except to the extent of the reporting person's pecuniary interest, if any, therein. /s/ Alan Heuberger, Attorny-in-fact for each of Michael Larson, Business Manager for Cascade Investment, L.L.C. and William H. Gates III 2009-11-02 William H. Gates III 2009-11-02