Quote:
Originally Posted by bryan
Unlike global climate change, evolution and reiki you should be able to prove this one pretty quickly... ie in about 2 tanks of gas.
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I'm not sure I can prove anything in two tanks of gas. There are all sorts of confounding variables, the largest of which is driving style. Just a few big stops from high speed can really throw out your fuel economy.
I'd also like to know the theoretical basis behind vortex generators placed before abrupt ends of things, as MetroMPG says. I can understand how they'd work on something like a 20-40 degree slope, and Mitsubishi wrote a paper on it. But the back of a van? Color me skeptical.