Have you ever heard about the Audi Group S Prototype? It was an Audi Rally car which was meant to succeed the insane Audi Group B Quattro. However, the series was discontinued and the car, although finished, never made its racing debut. Now, Audi brought it to the Eifel Rallye Festival in Germany. We do not know what performance it has, but we do know it rides on a space-frame chassis, has an updated five cylinder engine and a whole lot of aerodynamic aids.
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