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yep, that is about what I expected. The front can be very smooth, before any edges or misshapen parts get in the way. The front fender skirts have a very impressive result.
But, the question is, how do we translate something like fender skirts into an estimate of lowered Cd. Guess, less wind tunnels, we only have A-B-A MPG testing and rolldown testing, both rather imperfect for small changes.
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