Greg Biffle, driver of the #16 3M/Scotch-Blue Ford, battles Carl Edwards, driver of the #99 Aflac Ford, during the NASCAR Sprint Cup Series Pepsi 500. (Photo by Stephen Dunn/Getty Images for NASCAR) hide

Greg Biffle, driver of the #16 3M/Scotch-Blue Ford, battles Carl Edwards, driver of the #99 Aflac Ford, during the NASCAR Sprint... more