In road charging of personal EV's on the fly at highway speed is quite a pipe dream. The only place I see an application for in road charging would be for busses at stops and even then the cost/ benefit isn't practical. It would be much cheaper and better to just have the driver hop out and plug the bus into a dc charger at major stops. Large batteries in busses could probably be designed to use a proprietary large vehicle format dc charge at 800V even if they run the motors on 400V.
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