NASCAR Sprint Cup Series Preseason Thunder

NASCAR Sprint Cup Series Preseason Thunder

DAYTONA BEACH, FL – JANUARY 11: Chad Knaus, crew chief of the #48 Chevrolet, looks on in the garage area during NASCAR Sprint Cup Series Preseason Thunder testing at Daytona International Speedway on January 11, 2013 in Daytona Beach, Florida. (Photo by Chris Trotman/Getty Images for NASCAR)

Greg Engle