Charlotte Motor Speedway

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Driver Jimmie Johnson waits by his car before practice for Saturday's NASCAR Sprint Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Mike McCarn)

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Driver Jimmie Johnson waits in his car before practice for Saturday's NASCAR Sprint Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Mike McCarn)

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Kyle Busch celebrates in Victory Lane after winning the NASCAR Trucks series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Chuck Burton)

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Kyle Busch celebrates after winning the NASCAR Trucks series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Mike McCarn)

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Flames trail from Jeb Burton's truck after a crash during the NASCAR Trucks series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Terry Renna)

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Ryan Ellis, left, is hit by Jake Crum (82) during the NASCAR Trucks series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Bob Jordan)

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Kyle Busch poses with the trophy in Victory Lane after winning the NASCAR Trucks series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Terry Renna)

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Kyle Busch celebrates in Victory Lane after winning the NASCAR Trucks series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 16, 2014. (AP Photo/Terry Renna)