One of the advantages of an EV is you can
fully seal the grille/motor compartment and implement a full belly pan, because you don't have to deal with hot exhaust components. Maybe a very small allowance for a motor cooling intake duct.
After doing that, wheel discs, and the rear skirts (the pretty easy stuff), you need to focus on the back of the car. That's where the action is.
That Kammback is worth about a 5% improvement in fuel economy (range) at 55 mph, based on incomplete testing (only A-B comparison, not A-B-A).
http://ecomodder.com/forum/showthrea...sion-3518.html