International Speedway Corporation

18d029b657267d074c0f6a706700ce50.jpg

Kyle Busch, right, sits under an umbrella as rain falls during qualifying for Saturday's NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla., Friday, Feb. 21, 2014. (AP Photo/Phelan M. Ebenhack)

736d540052d569074c0f6a706700cbb0.jpg

Austin Dillon (3) and Greg Biffle (16) lead the field to the green flag for the start of the first of two NASCAR Sprint Cup qualifying auto races at Daytona International Speedway in Daytona Beach, Fla., Thursday, Feb. 20, 2014. (AP Photo/Phelan M. Ebenhack)

4492c5f3566679074c0f6a70670084f1.jpg

Dale Earnhardt Jr. gets ready for 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)

cb9884ae571a7d074c0f6a706700a83c.jpg

Dale Earnhardt Jr, right, talks with Danica Patrick during qualifying for Saturday's NASCAR Nationwide series auto race at Daytona International Speedway in Daytona Beach, Fla., Friday, Feb. 21, 2014. (AP Photo/David Graham)

6e3fce3f57247d074c0f6a7067000660.jpg

Crew members cover cars as rain falls during qualifying for Saturday's NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla., Friday, Feb. 21, 2014. (AP Photo/Phelan M. Ebenhack)

b36493b157267d074c0f6a706700ea8c.jpg

Dylan Kwasniewski looks up at the sky after qualifying for Saturday's NASCAR Nationwide Series auto race at Daytona International Speedway in Daytona Beach, Fla., Friday, Feb. 21, 2014. (AP Photo/Phelan M. Ebenhack)

daabe68453116a074c0f6a706700bcc3.jpg

Martin Truex Jr, left, and Carl Edwards, right, lead the field at the start of the second of two NASCAR Sprint Cup series qualifying auto races at Daytona International Speedway in Daytona Beach, Fla., Thursday, Feb. 20, 2014. (AP Photo/David Graham)

a7df88ea56857a074c0f6a7067007068.jpg

Kurt Busch, left, talks with Danica Patrick in the garage before 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/Phelan M. Ebenhack)

2eba315356687a074c0f6a7067002091.jpg

Danica Patrick climbs in her car before the start of 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/Phelan M. Ebenhack)

90823abe565979074c0f6a7067003d36.jpg

Austin Dillon, right, talks with his grandfather and car owner, Richard Childress, left, in his garage before 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/Terry Renna)

c37eee9f56817a074c0f6a7067001918.jpg

Denny Hamlin gets ready for 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/Phelan M. Ebenhack)