** FILE ** In this July 11, 2008 file photo, Brad Keselowski drives during the NASCAR Nationwide Series Dollar General 300 auto race at Chicagoland Speedway in Joliet, Ill. The 24-year-old Nationwide Series driver is second in the season standings heading into this weekend's race at St. Louis. Off the track, Keselowski is learning about the things he didn't really worry about while making his way through the ranks. (AP Photo/Tim Stewart, File)
AP
** FILE ** In this July 10, 2008 file photo, NASCAR driver Ryan Newman smiles as he looks at his crew member in his garage before the Sprint Cup Practice at Chicagoland Speedway in Joliet, Ill. The Penske team announced Monday, July 14, 2008 that Newman, projected as a possible teammate for Tony Stewart on the two-time NASCAR champion's new team, will leave Penske Racing at the end of the 2008 season. (AP Photo/Nam Y. Huh, File)
AP
** FILE ** In this July 12, 2008 file photo, Ryan Newman (12), Jimmie Johnson (48) and Carl Edwards, right, drive during the NASCAR Sprint Cup Series LifeLock.com 400 auto race at Chicagoland Speedway in Joliet, Ill. The Penske team announced Monday, July 14, 2008 that Newman, projected as a possible teammate for Tony Stewart on the two-time NASCAR champion's new team, will leave Penske Racing at the end of the 2008 season. (AP Photo/Tim Stewart, File)
AP
JOLIET, IL - JULY 12: Kurt Busch, driver of the #2 Miller Lite Dodge drives during the NASCAR Sprint Cup Series LifeLock.com 400 on July 12, 2008 at Chicagoland Speedway in Joliet, Illinois. (Photo by Chris Graythen/Getty Images)
Getty Images
JOLIET, IL - JULY 12: A.J. Allmendinger, driver of the #84 Red Bull Toyota leads Elliott Sadler, driver of the #19 Best Buy Chevrolet during the NASCAR Sprint Cup Series LifeLock.com 400 on July 12, 2008 at Chicagoland Speedway in Joliet, Illinois. (Photo by Chris Graythen/Getty Images)
Getty Images
JOLIET, IL - JULY 12: Chrysler CEO Bob Nardelli watches his drivers from the #2 Miller Lite Dodge pit during the NASCAR Sprint Cup Series LifeLock.com 400 on July 12, 2008 at Chicagoland Speedway in Joliet, Illinois. (Photo by Rusty Jarrett/Getty Images for NASCAR)
Getty Images
JOLIET, IL - JULY 12: Matt Kenseth, driver of the #17 USG Ford pits during the NASCAR Sprint Cup Series LifeLock.com 400 on July 12, 2008 at Chicagoland Speedway in Joliet, Illinois. (Photo by Rusty Jarrett/Getty Images for NASCAR)
Getty Images
JOLIET, IL - JULY 12: NASCAR legend Richard Petty receives an award celebrating his 50th anniversary in NASCAR during pre-race festivities prior to the NASCAR Sprint Cup Series LifeLock.com 400 on July 12, 2008 at Chicagoland Speedway in Joliet, Illinois. (Photo by Geoff Burke/Getty Images for NASCAR)
Getty Images
Joe Gibbs M&Ms Toyota team members push their driver Kyle Busch out of the infield after winning the NASCAR Sprint Cup Life Lock.com 400 at Chicagoland Speedway in Joliet, Illinois, July 12, 2008. REUTERS/Robert LeSieur (UNITED STATES)
Reuters
JOLIET, IL - JULY 12: Samantha Sarcinella and Kyle Busch, driver of the #18 M&Ms Toyota prior to the start of the NASCAR Sprint Cup Series LifeLock.com 400 on July 12, 2008 at Chicagoland Speedway in Joliet, Illinois. (Photo by Rusty Jarrett/Getty Images for NASCAR)
Getty Images