Driver Tony Stewart adjusts the rear view mirror in his car before going out on the track to practice for the NASCAR Sprint Unlimited auto race at Daytona International Speedway in Daytona Beach, Fla., Friday, Feb. 14, 2014. Stewart has not raced in more than six months since he broke two bones in his leg in an August 2013 sprint-car crash.(AP Photo/John Raoux)
Driver Austin Dillon answers reporters questions during NASCAR auto racing media day at Daytona International Speedway in Daytona Beach, Fla., Thursday, Feb. 13, 2014. (AP Photo/John Raoux)