Quote:
Originally posted by ales
Hey! I was the one who mentioned ground effect 
I still fail to see how a car with the underside designed to produce downforce will have more drag than an absolutely identical car with a flat bottom or the underside that we find in most passenger cars now. (not trying to argue with you, trying to understand)
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It would produce less, a car with anunderbody like the enzo has no exposed suspension or drivetrain pieces to disturb airflow, I believe he's saying an underbody designed witht he bernoulli principle in mind would have more drag then one with just a flat covered panel underneath. The only thing I can see doing this, is the front splitter, the rest is just simple air velocity and pressure, there is no wing forcing the air around it, though a rear diffuser if used would create drag.
As to a flat 12, nobody makes those anymore to my knowledge, and you would definitly need all 80 of those inches to make use of it.