GO!
(http://i70.photobucket.com/albums/i87/Vannette_12/BMW.jpg)
Definitely a concept. I was going to say Aerovette but there's a lot that's not right with that (RHD, the weird vents on the top, windshield wiper placement, shape of popup headlights...) Definitely from the same "Homer" concept era, though.
I thought C111, but that's not right.
Dome Zero P2.