LAS VEGAS, NV - MARCH 10: Chad Knaus (R), crew chief of the #48 Lowe's/Kobalt Tools Chevrolet, driven by Jimmie Johnson, helps prepare a back-up car after Johnson crashed during practice for the ... more 
LAS VEGAS, NV - MARCH 10: Chad Knaus (R), crew chief of the #48 Lowe's/Kobalt Tools Chevrolet, driven by Jimmie Johnson, helps prepare a back-up car after Johnson crashed during practice for the NASCAR Sprint Cup Series Kobalt Tools 400 at Las Vegas Motor Speedway on March 10, 2012 in Las Vegas, Nevada. (Photo by Jeff Bottari/Getty Images for NASCAR) less 
1 / 1
Getty Images | Photo By Jeff Bottari / Getty Images for NASCAR
Sat, Mar 10, 2012 3:54 PM EST