Italian concept car, Alfa Romeo BAT 7 ('Berlinetta Aerodinamica Tecnica'), a collaboration of Alfa Romeo and the designer Franco Scaglione of Bertone. The curved rear 'wings' achieved a drag coefficient of
Evolution of the Batmobile -- I have always loved the original 66 for the fact that it would be the easiest to fix/replace. Throw a diesel in for even simpler operation. But that would not sell tickets.