Can performance ever be a sin? "No", says Hans-Jurgen Abt, managing director of Abt Sportsline, with a wide grin, and looks satisfied to the IAA-debut of the most extreme tuning interpretation of the Audi TT. The shape leaves no doubt: this is the road-going version of the racing car from the DTM (German Touring Car Masters), that has matured to a multiple race winner this season
