Right, that's the "bubble" theory to my untrained mind. So here's a question... suppose you extended side fairings all the way back to the tailgate so that the bed's stationary vortex was trapped between the walls... essentially like your aeroshell, but without the top... maybe the cab-top is faired down a little, but the bed is completely open, no tonneau... Would it behave nearly as well as the aeroshell?
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