New Audi TT GT4 Concept

var addthis_config = {"data_track_clickback":true};  When we saw the Ginetta G55 GT4 class racecar, we were impressed. Packing a potent 370HP engine at an affordable price, it's good looking, too, even though for obvious reasons that matters a lot less in the world of motorsports. Now, Audi also wants a piece of the GT4 action. On the occasion of the DTM race in Shanghai, the German automaker