Audi R8 V12 TDI

If the regular R8 didn't wow you with its striking looks and the huge chrome "blade" sitting behind the doors, how about one with a diesel that'll do 185 mph and return 24 mpg?

While only a concept, this R8's 500hp V12 is all but ready for production given Audi's tremendous success with its turbodiesel GT racecars. What's next, Audi, a diesel-powered Lamborghini Gallardo?