Kyle Busch

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Kyle Busch looks on from the garage area during practice for the NASCAR Sprint Cup series auto race, Friday, May 30, 2014, at Dover International Speedway in Dover, Del. (AP Photo/Nick Wass)

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Crew members perform a pit stop on driver Kyle Busch's car during the NASCAR Nationwide series History 300 auto race at Charlotte Motor Speedway in Concord, N.C., Saturday, May 24, 2014. (AP Photo/Terry Renna)

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Kyle Busch, left, talks with Dale Earnhardt Jr, right, before practice for Sunday's NASCAR Sprint Cup series Coca-Cola 600 auto race at Charlotte Motor Speedway in Concord, N.C., Thursday, May 22, 2014. (AP Photo/Mike McCarn)