Here is my 'dead horse' that I keep bringing up from time to time.
This is proof that you can have a blunt 'barn door' front end and still have good aero.
This old '80 Camaro got down to a wind tunnel tested .201 Cd - or just over what the EV-1 achieved.
Chevy Camaro Aerodynamics Side View Photo 7
Also look at the attached flow with the 'barn door' flat front end on this '32 Coupe :