The Nascar Sprint Cup Series

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Tony Stewart is showered as he climbs out of the car to celebrate in Victory Lane after winning the NASCAR Sprint Cup Series auto race, Sunday, June 2, 2013, at Dover International Speedway in Dover, Del. (AP Photo/Nick Wass)

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Kevin Harvick celebrates in victory lane with his wife Delana, right, after winning the NASCAR Sprint Cup series Coca-Cola 600 auto race at Charlotte Motor Speedway in Concord, N.C., Sunday, May 26, 2013. (AP Photo/Nell Redmond)

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David Ragan celebrates after winning the NASCAR Sprint Cup Series Aaron's 499 auto race at Talladega Superspeedway in Talladega, Ala., Sunday, May 5, 2013. (AP Photo/Rainier Ehrhardt)

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Kasey Kahne (5) leads the field during the NASCAR Sprint Cup Series Food City 500 auto race on Sunday, March 17, 2013, in Bristol, Tenn. (AP Photo/Wade Payne)

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Carl Edwards celebrates winning the NASCAR Sprint Cup Series auto race, Sunday, March 3, 2013, in Avondale, Ariz. (AP Photo/Matt York)

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**FILE** Kid Rock sings before the NASCAR Sprint Cup Series auto race at Homestead-Miami Speedway in Homestead, Fla., on Nov. 18, 2012. (Associated Press/The Miami Herald)

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Kevin Harvick celebrates with his pit crew in victory lane after his win at the NASCAR Sprint Cup Series auto race at Phoenix International Raceway, Sunday, Nov. 11, 2012, in Avondale, Ariz. (AP Photo/Ross D. Franklin)

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Jimmie Johnson (48) celebrates with the checkered flag in victory lane following his win in the NASCAR Sprint Cup Series auto race at Texas Motor Speedway, Sunday, Nov. 4, 2012, in Fort Worth, Texas. (AP Photo/Tony Gutierrez)

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Jimmie Johnson celebrates in Victory Lane after winning the NASCAR Sprint Cup Series auto race at Martinsville Speedway, Sunday, Oct. 28, 2012, in Martinsville, Va. (AP Photo/Don Petersen)

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Matt Kenseth stands on his car in Victory Lane after winning the NASCAR Sprint Cup Series auto race at Kansas Speedway, Sunday, Oct. 21, 2012, in Kansas City, Kan. (AP Photo/Autostock, Matthew T. Thacker) MANDATORY CREDIT