Check with Discovery's Mythbusters, they did a story on the tailgate idea. Real world and wind tunnel testing showed that tailgate up was best for aerodynamics. Real world fuel consumption test showed tailgate up better (marginally) , and tailgate replaced with one of the woven (netting) types better still.
I watch a lot of Discovery, it is the only thing of interest at 2: am. S.
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When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Albert Einstein
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