Two-time Indy 500 winner and Chevy's 2008 Indy 500 pace car driver Emerson Fittipaldi sits behind the wheel of the Corvette pace car as General Motors Vehicle Chief Engineer - Current Performance Vehicle Jim Danahy looks on Tuesday, March 11, 2008 in Bowling Green, Kentucky. (Photo by Ron McQueeney/IMS for General Motors)

Two-time Indy 500 winner and Chevy's 2008 Indy 500 pace car driver Emerson Fittipaldi rolls the Corvette pace car off the assembly line Tuesday, March 11, 2008 in Bowling Green, Kentucky. Fittipaldi autograph is on the underside of the console. (Photo by Ron McQueeney/IMS for General Motors)

Two-time Indy 500 winner and Chevy's 2008 Indy 500 pace car driver Emerson Fittipaldi (sixth from right) poses with plant workers at the Bowling Green (KY) Corvette Assembly Plant with the Corvette pace car Tuesday, March 11, 2008. (Photo by Ron McQueeney/IMS for General Motors)