This excerpt taken from the AN DEF 14A filed Apr 28, 2006.
Membership
The Subcommittee shall be comprised of at least two members of
the Corporate Governance Committee designated by the Board. The
Board shall designate one member as the Chair, based on the
recommendation of the Corporate Governance Committee.
Subcommittee members may be removed by the Board.
The Subcommittee must be comprised of members that meet the
independence requirements of the New York Stock Exchange and the
independence standard set forth in the AutoNation, Inc.
Corporate Governance Guidelines.