Sprint All-Star Race

CHARLOTTE, NC - MAY 19: Dale Earnhardt Jr., driver of the #88 Dale Jr. Foundation/National Guard/Diet Mountain Dew Chevrolet, races Marcos Ambrose, driver of the #9 DEWALT Ford, during the NASCAR Sprint All-Star Race at Charlotte Motor Speedway on May 19, 2012 in Charlotte, North Carolina. (Photo by Chris Graythen/Getty Images)

CHARLOTTE, NC - MAY 19: Greg Biffle blows the engine of the #16 3M/American Red Cross Ford during the NASCAR Sprint All-Star Race at Charlotte Motor Speedway on May 19, 2012 in Charlotte, North Carolina. (Photo by Scott Halleran/Getty Images for NASCAR)

CHARLOTTE, NC - MAY 19: Kurt Busch, driver of the #51 Phoenix Construction Services Chevrolet, races AJ Allmendinger, driver of the #22 Pennzoil Dodge, and Jeff Gordon, driver of the #24 DuPont Chevrolet, during the NASCAR Sprint All-Star Race at Charlotte Motor Speedway on May 19, 2012 in Charlotte, North Carolina. (Photo by Chris Graythen/Getty Images)

CHARLOTTE, NC - MAY 19: Jimmie Johnson, driver of the #48 Lowe's Patriotic Chevrolet, celebrates with a burnout after winning the NASCAR Sprint All-Star Race at Charlotte Motor Speedway on May 19, 2012 in Charlotte, North Carolina. (Photo by Jeff Zelevansky/Getty Images for NASCAR)

CHARLOTTE, NC - MAY 19: Jimmie Johnson, driver of the #48 Lowe's Patriotic Chevrolet, crosses the finish line to win the NASCAR Sprint All-Star Race at Charlotte Motor Speedway on May 19, 2012 in Charlotte, North Carolina. (Photo by Streeter Lecka/Getty Images)

CHARLOTTE, NC - MAY 19: Jimmie Johnson, driver of the #48 Lowe's Patriotic Chevrolet, celebrates in victory lane after winning the NASCAR Sprint All-Star Race at Charlotte Motor Speedway on May 19, 2012 in Charlotte, North Carolina. (Photo by Jared C. Tilton/Getty Images)