Sprint Cup Series

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FILE - In this Feb. 23, 2014 file photo, Dale Earnhardt Jr. celebrates in Victory Lane after winning the NASCAR Daytona 500 Sprint Cup series auto race at Daytona International Speedway in Daytona Beach, Fla. As NASCAR heads West for a two-race swing through Phoenix and Las Vegas, the challenge becomes duplicating the Daytona 500 so that the remaining 36 events are half as exciting. (AP Photo/Terry Renna, File)

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Driver Tony Stewart greets fans as he is introduced before the NASCAR Daytona 500 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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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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Kelley Earnhardt Miller, right, celebrates after her brother, Dale Earnhardt Jr, wins 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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Dale Earnhardt Jr. celebrates in Victory Lane after winning the NASCAR Daytona 500 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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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. celebrates in Victory Lane after winning 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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Dale Earnhardt Jr., center, celebrates in Victory Lane with teammate Jimmie Johnson, left, and team owner Rick Hendrick, right, after winning 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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Dale Earnhardt Jr., left, celebrates in Victory Lane with teammate Jeff Gordon, right, after winning 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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Dale Earnhardt Jr., right, celebrates in Victory Lane with teammate Jimmie Johnson, left, after winning 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)