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The issue is infrastructure, sending power over air is hard, most systems use magnets or electric coils, to build these into roads would cost $$$$$$. Also the distance is only good to about 3 inches. that makes for tight clearness and even at the distance the power loss is over 20%.
Until they figure a way to get power to move over long distances (over 10' with under 5% loss) it will not happen.
Another thing is how to only send it where you want. Voltage wants to go to ground, it will short out all sorts of thing (any electronics) not to mention you heart.
when those things work it will happen.
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