[winkosmosis]

Originally Posted by Cd

Under ? Don't you mean over ?

Here is a site that has lots of useful information ( be sure to click the links to the other pages ! ) regarding blunt, versus wedge, versus bullet shaped noses.
Lots of good info such as lift and drag coefficients etc.

They even tried testing windshield shapes as well.

Winged Warriors/National B-Body Owners Association - Chrysler Winged Car Development and Testing

No, I mean under. It's the opposite of an air dam.