Instarx, I wouldn't blame the styling of the original Volt concept on GM's engineers. That's got "stylist" written all over it.
GM has shown time and again that when they let their engineers design for aero, they can knock them out of the park. They just don't often let them produce their designs.
FYI, updated thread discussion the Volt "production" version's aerodynamics:
http://ecomodder.com/forum/showthrea...ures-4629.html