Ok, before you start this seems a bit off the wall to me too. I have been reading about mods to trucks involving sealing off the bottom side to improve air flow. Seems like a lot of work to me. But I ...
Ichabod, I have seen those discussions, and I guess what they say about economists might also be true of aerodynamicists -- if you took all of their opinions and laid them end to end, you'd never reach a conclusion!
If anyone knows for sure whether those airtabs really make financial sense (or don't), I would love to see some hard data. It could be like those underbelly skirts on freight trailers -- they make sense if you drive a quarter million miles a year.
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