Well technically the name came from Audi's Fox/Vw dasher which was a B1 blatform...these cars were released in 1975 i belive along with the rabbit and scirocco (A1 chassis) as the first watercooled Volkswagens....but the VW Fox itself did not come along until 1987...this chassis was the BX chassis and was completley based off the B1 dasher.