Kevin Harvick (4) drives out of Turn 4 during the NASCAR Sprint Cup series Coca-Cola 600 auto race at Charlotte Motor Speedway in Concord, N.C., Sunday, May 25, 2014. (AP Photo/Chuck Burton)
Danica Patrick (10) spins in front of Brian Scott (33) during the NASCAR Sprint Cup series Coca-Cola 600 auto race at the Charlotte Motor Speedway in Concord, N.C., Sunday, May 25, 2014. (AP Photo/Gerry Broome)
Driver Kurt Busch, right, prepares to kiss girlfriend Patricia Driscoll after dropping out of the NASCAR Sprint Cup series Coca-Cola 600 auto race at Charlotte Motor Speedway in Concord, N.C., Sunday, May 25, 2014. (AP Photo/Chuck Burton)
Kurt Busch (41) drives his car out of Turn 4 during the NASCAR Sprint Cup series Coca-Cola 600 auto race at Charlotte Motor Speedway in Concord, N.C., Sunday, May 25, 2014. (AP Photo/Chuck Burton)
Kurt Busch (41) smokes after his engine blows up on the backstretch during the NASCAR Sprint Cup series Coca-Cola 600 auto race at Charlotte Motor Speedway in Concord, N.C., Sunday, May 25, 2014. (AP Photo/Chris Keane)