FILE - In this May 25, 2006 file photo Kenny Wallace is shown before qualifying for the NASCAR Nextel Cup Coca-Cola 600 auto race at Lowe's Motor Speedway in Concord, N.C. (AP Photo/Chuck Burton)

Dale Earnhardt Jr., left, stands by his car during a rain delay in the NASCAR Coca-Cola 600 auto race at Lowe's Motor Speedway in Concord, N.C., Monday, May 25, 2009. (AP Photo/Chuck Burton)

CONCORD, NC - MAY 25: Team owner Michael Waltrip (L), driver of the #55 NAPA Auto Parts Toyota, and David Reutimann (C), driver of the #00 Aaron's Dream Machine Toyota, celebrate in victory lane after winning the NASCAR Sprint Cup ...

David Reutimann sits by his car during a rain delay in the NASCAR Coca-Cola 600 auto race at Lowe's Motor Speedway in Concord, N.C., Monday, May 25, 2009. (AP Photo/Terry Renna)