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Seems like a few cents of wire would replace vastly more expensive wifi, be more reliable, and less prone to interference.
Regen means less onboard battery storage needed, since you're getting "free" juice back at every slowdown and stop. So, regen is effectively cheaper and lighter, and pays for itself. With less battery storage needed, less structure and weight to support it is also needed, making for secondary savings in weight and cost.
I looked at inner surfaces of two bent aluminum BMW wheels, no sign of deformation much inboard of the lip, so am sticking to my view that said inner surface would be good as a mounting place for magnets on the wheel.
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