Audi A3 Concept is aluminum und four doors und a hot-ass engine

Audi has explored the possibility of adding a four-door sedan body style to the A3 range since time immemorial. Or at least for the past year or two. Yesterday the German automaker all about "aluminum und shteel" basically officially confirmed it, releasing the first official sketches of this A3 Concept ahead of its… » 2/21/11 8:30am 2/21/11 8:30am