The Nascar Sprint Cup Series

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Driver Denny Hamlin (11) leads Tony Stewart (14) as he makes his way around the track during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Saturday, March 15, 2000, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Denny Hamlin (11) makes his way around the track during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Saturday, March 15, 2000, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Paul Menard (27) leads Kurt Busch (41) during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Kyle Busch (18) waits during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Danica Patrick (10) rolls down pit road after hitting the wall during practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Car owner Jack Roush, right, signs an autograph before practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Tony Stewart (14) signs autographs before practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)

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Driver Jimmie Johnson (48) talks to teammates before practice for the NASCAR Sprint Cup series auto race at Bristol Motor Speedway on Friday, March 14, 2014, in Bristol, Tenn. (AP Photo/Wade Payne)