Quote:
Originally Posted by SVOboy
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.
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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?)