History will be made at the 2008 Indianapolis 500 when not one, but two distinctive vehicles will serve as the official pace cars.

Chevrolet and Indianapolis Motor Speedway officials gathered at the Indianapolis Auto Show Thursday to make the announcement.

One of the pace cars is a customized Corvette Z06 E85 concept that runs on E85 ethanol fuel that will be driven during the race’s pace lap by two-time Indianapolis 500 champion Emerson Fittipaldi.

The other official pace car is a black-and-silver commemorative edition that marks the 30th anniversary of the celebrated 1978 pace car – the first Corvette to pace the field at the Indianapolis 500. Chevrolet will produce a total of 500 pace car replicas in both coupe and convertible form, each signed personally by Fittipaldi at the Corvette’s Bowling Green, Ky., assembly plant.

“Although not a production FlexFuel vehicle, the Corvette Z06 E85 concept pace car is a high-performance example of Chevrolet’s gas-friendly to gas-free initiative, demonstrating viable fuel solutions,” said Ed Peper, Chevrolet general manager. “As an ethanol refiner in his native Brazil, Emerson Fittipaldi is the fitting Chevrolet champion to help support GM’s efforts with E85 and celebrate 30 years of the Corvette pacing the Indianapolis 500.”