Daytona 500

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Crew members work on Tony Stewart's car during the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Terry Renna)

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Track personnel attempt to dry the track during the NASCAR Daytona 500 auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Phelan M. Ebenhack)

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Jimmie Johnson prepares for practice for Sunday's NASCAR Daytona 500 Sprint Cup series auto race in Daytona Beach, Fla., Friday, Feb. 21, 2014. (AP Photo/Terry Renna)

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Matt Kenseth, left, looks out from under an umbrella as he stands near his car during a rain delay in the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/Terry Renna)