Mitsubishi i
 

"i", the mitsubishi concept car, has somes interesting solution for a lower drag.
between these, it is present, an atypical underbody panel.
between the chassis and the panels, an interstice is present.
Mitsubishi declares that the hot engine air flow, between the interstice with minimal drag becouse, this system reduce the rear vacuum.

http://image.automotive.com/f/concep...front-left.jpg

you can read the source:

http://www.mitsubishi-motors.com/cor...004/16E_07.pdf

Nice link, thanks!

WOW .24 Cd! I was not expecting that. They should bring the gasoline version here now and the electric when its ready. This car is a lot more attractive than its Smart sibling.

thanks for pic ;)