Kobalt Tools 400 – Practice

Kobalt Tools 400 – Practice

LAS VEGAS, NV – MARCH 08: Crew members dry the #55 Aaron’s Dream Machine Toyota, driven by Mark Martin, in the garage before practice for the NASCAR Sprint Cup Series at Las Vegas Motor Speedway on March 8, 2013 in Las Vegas, Nevada. (Photo by Todd Warshaw/Getty Images)

Greg Engle