LAS VEGAS, NV - MARCH 04: Greg Biffle drives the #16 3M Post-it Ford during practice for the NASCAR Sprint Cup Series Kobalt Tools 400 at Las Vegas Motor Speedway on March 4, 2011 in Las Vegas, ... more 
LAS VEGAS, NV - MARCH 04: Greg Biffle drives the #16 3M Post-it Ford during practice for the NASCAR Sprint Cup Series Kobalt Tools 400 at Las Vegas Motor Speedway on March 4, 2011 in Las Vegas, Nevada. (Photo by Jeff Gross/Getty Images) less 
1 / 7
Getty Images | Photo By Jeff Gross / Getty Images
Fri, Mar 4, 2011 5:40 PM EST