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Emergency personnel attend to an injured spectatos in front of the grandstands after Kyle Larson's car hit the safety wall and fence along the front stretch on the final lap of the NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 23, 2013. (AP Photo/Phelan M. Ebenhack)

Emergency personnel attend to an injured spectatos in front of the grandstands after Kyle Larson's car hit the safety wall and fence along the front stretch on the final lap of the NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla., Saturday, Feb. 23, 2013. (AP Photo/Phelan M. Ebenhack)

55th Daytona 500

Jimmie Johnson celebrates after winning the Daytona 500 NASCAR Sprint Cup Series auto race, Sunday, Feb. 24, 2013.