It's a good idea. It needs a few tweaks, though.
-Instead of cars, it's supermodels.
-Instead of an automotive design studio, go to the Sports Illustrated offices.
-Instead of design tools, provide an unlimited supply of buffalo wings (nuclear) and beer.
-Oh, and instead of car designers, just round up a bunch of average guys.
So the average guys go to Sports Illustrated. There, they carefully evaluate a wide selection of supermodels while eating wings and drinking beer. Between wings, all of the guys keep saying "I'm a designer. I'm a designer. I'm a designer. I'm a designer.......". Finally, the dude who picks the winning cover model gets a free trip to the Detroit Auto show.
That's it. Whattya think? I hope I didn't make too many changes.