Nascar

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Driver Matt Crafton driver through turn four during a NASCAR Truck Series auto race at Martinsville Speedway in Martinsville, Va., Sunday, March 30, 2014. (AP Photo/Mike McCarn)

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Driver Matt Crafton celebrates in victory lane after winning a NASCAR Truck Series auto race at Martinsville Speedway in Martinsville, Va., Sunday, March 30, 2014. (AP Photo/Mike McCarn)

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Driver Kurt Busch (41) drives through turn four as Marcos Ambrose (9) follows during a NASCAR Sprint Cup auto race at Martinsville, Speedway in Martinsville, VA., Sunday March 30, 2014. (AP Photo/Mike McCarn)

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Clay Campbell, left, president of Martinsville Speedway celebrates in victory lane with race winner Kurt Busch, right, Patricia Driscoll, Busch's girlfriend and her son, Houston after a NASCAR Sprint Cup auto race at Martinsville, Speedway in Martinsville, VA., Sunday March 30, 2014. (AP Photo/Mike McCarn)

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Driver Kurt Busch celebrates in victory lane after winning a NASCAR Sprint Cup auto race at Martinsville, Speedway in Martinsville, Va., Sunday March 30, 2014. (AP Photo/Steve Shappard)

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Kevin Harvick (4) pulls off pit road as his crew members wave before the start of a NASCAR Sprint Cup auto race at Martinsville, Speedway, Sunday, March 30, 2014, in Martinsville, Va. (AP Photo/Mike McCarn)

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Workers try to dry the race track before the start of a NASCAR Truck Series auto race at Martinsville Speedway in Martinsville, Va., Saturday, March 29, 2014. (AP Photo/Mike McCarn)

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Trucks sit on pit road under covers as a crew member sweeps water from a pit stall during a rain delay for a NASCAR Truck Series auto race at Martinsville Speedway in Martinsville, Va., Saturday, March 29, 2014. (AP Photo/Mike McCarn)