CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER
                       PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the CarMax, Inc. (the "Company") Quarterly Report on Form
10-Q for the quarter ended May 31, 2003, as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), I, Austin Ligon,
President and Chief Executive Officer of the Company, certify pursuant to 18
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that, to the best of my knowledge:

         (1).     The Report fully complies with the requirements of Section 13
                  (a) or 15(d) of the Securities  Exchange Act of 1934, as
                  amended; and

         (2).     The information contained in the Report fairly presents, in
                  all material respects, the financial condition and results of
                  operations of the company.


Date:     July 14, 2003                      By: /s/ Austin Ligon
       -------------------------------          --------------------------------
                                                Austin Ligon
                                                President and
                                                Chief Executive Officer