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Old 03-05-2009, 12:44 PM   #15 (permalink)
alohaspirit
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Quote:
Originally Posted by SVOboy View Post
It should create a pocket of dense air that is like a smooth surface, so the penalty should be small, but still there. At least as I understand the principle.

I remember on mythbusters when they were testing mpg in pickups
and how a regular bed created a cushion of air which the air off the cab rolled off
(it was better than an open tailgate)


its probably somewhat similiar
but i wouldve thought that securing a piece over the grill would be easier and more effective

(probably aestetic?)
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