NASCAR Photo Gallery

Jimmie Johnson, driver of the #48 Lowe's Chevrolet, and Marcos Ambrose, driver of the #9 Stanley Ford, lead the field past the green flag to start the NASCAR Sprint Cup Series STP Gas Booster 500 on April 7, 2013 at Martinsville Speedway in Ridgeway, Virginia. (Photo by Jared C. Tilton/NASCAR via Getty Images)

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