Chevrolet has revealed two Corvette variants that will serve as pace cars at the 2008 Indy 500 -- a custom Z06 that runs on E85 ethanol that will be driven by two-time Indy 500 champ Emerson Fittipaldi, and a 30th anniversary Corvette that commemorates the Corvette's first appearance as a pace car at the 1978 Indy 500.
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