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DOVER, DE - MAY 31: Kasey Kahne, driver of the #5 Farmers Insurance Chevrolet, leads Martin Truex Jr., driver of the #78 Furniture Row/Visser Precision Chevrolet, during the NASCAR Sprint Cup Series FedEx 400 Benefiting Autism Speaks at Dover International Speedway on May 31, 2015 in Dover, Delaware. (Photo by Nick Laham/Getty Images)

DOVER, DE - MAY 31:  Kasey Kahne, driver of the #5 Farmers Insurance Chevrolet, leads Martin Truex Jr., driver of the #78 Furniture Row/Visser Precision Chevrolet, during the NASCAR Sprint Cup Series FedEx 400 Benefiting Autism Speaks at Dover International Speedway on May 31, 2015 in Dover, Delaware.  (Photo by Nick Laham/Getty Images)