Nascar Sprint Cup Series

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Brad Keselowski walks through the garage area during a practice session for the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Friday, Feb. 21, 2014. (AP Photo/John Raoux)

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Kevin Harvick (4), Jamie McMurray (1) and Reed Sorenson (36) crash on the front stretch on the last lap of the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/John Raoux)

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Dale Earnhardt Jr. drives in front of fans in the grandstands waving the checkered flag after winning the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/John Raoux)

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Car owner Rick Hendrick rides with Dale Earnhardt Jr. to Victory Lane as they celebrate after winning the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/John Raoux)

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Track officials and car crew members look over the track during a rain delay in the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/John Raoux)

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A member of Jimmie Johnson's crew, center, and other crew members remove water from the pit area at the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/John Raoux)

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Track dryers go along the front stretch during a rain delay in the Daytona 500 NASCAR Sprint Cup Series auto race at Daytona International Speedway in Daytona Beach, Fla., Sunday, Feb. 23, 2014. (AP Photo/John Raoux)