I offered the link as given, not as proof. There is always the hope that the "wind tunnel test" may be offered at some point (other participants). Truck aero, wake vortexes and the rest will continue to be of interest. Takes very little improvement on a truck to make real percentage gains in comparison to cars. Truck handling, trailer behavior in winds is also a real concern for operators. This should also be quantified in some fashion if such devices are to have merit.
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