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paddle wheel
Perhaps at some point they will do 3D modelling and wind tunnel evaluation.
Part of my brain says,eliminate the vorticity in the wake which the paddle wheel would harvest.
The other side says,if you're stuck with vorticity,then make the most of it.
The National Highway Traffic Safety Administration would have a say in the U.S.A. over any protruberance at the rear of a vehicle such as a paddle wheel.
'guess we'll see where it all goes.
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