The Nascar Sprint Cup Series

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Kyle Busch celebrates after winning the NASCAR Sprint Cup Series auto race at Bristol Motor Speedway on Sunday in Bristol, Tenn.

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Jeff Gordon celebrates his win in the NASCAR Sprint Cup Series auto race at Phoenix International Raceway on Sunday, Feb. 27, 2011, in Avondale, Ariz. (AP Photo/Ross D. Franklin)

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Jeff Gordon (24) drives into the fourth turn during the NASCAR Sprint Cup Series auto race at Phoenix International Raceway on Sunday, Feb. 27, 2011, in Avondale, Ariz. (AP Photo/Ross D. Franklin)

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Matt Kenseth (17) and Clint Bowyer (33) race on the back stretch during the NASCAR Sprint Cup Series auto race at Texas Motor Speedway in Fort Worth, Texas, Saturday, April 9, 2011. Kenseth won the race.(AP Photo/LM Otero)

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Sam Hornish Jr. (77) and Kasey Kahne (9) spin on the front stretch during the NASCAR Sprint Cup Series auto race at Charlotte Motor Speedway in Concord, N.C., Saturday, Oct. 16, 2010. (AP Photo/Gerry Broome)

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Crews work on cars after practice for the NASCAR Sprint Cup Series Jeff Byrd 500 race at Bristol Motor Speedway Friday, March 18, 2011 in Bristol, Tenn. (AP Photo/Wade Payne)

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Kasey Kahne, right, signs a car for Chris Holzschuh before practice for the NASCAR Sprint Cup Series' Heluva Good! Sour Cream Dips at The Glen auto race in Watkins Glen, N.Y., Friday, Aug. 6, 2010. (AP Photo/ David Duprey)

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The wrecked car of Elliott Sadler is towed into the garage area during the NASCAR Sprint Cup Series Pennsylvania 500 auto race, Sunday, Aug. 1, 2010, in Long Pond, Pa. (AP Photo/Matt Slocum)