Audi Rs 6 Gto Concept Paints Its Wagon in an Homage to 90 Quattro Imsa Gto Racer

As Audi's Quattro all-wheel-drive framework praises its 40th commemoration, a RS 6 Avant has been decked out in accolade for one of Quattro's most prominent motorsports minutes. The Audi RS 6......