This car would be GREAT for speed and red light cameras - be invisible to the camera and the camera shoots for a photo but captures the image of the car behind you superimposed onto all of the sensors affixed to your car.
As for hydrogen the real tricky issue is how to transport it - pipelines have to deal with the hardening effect that hydrogen has on the metal, liquefying the hydrogen takes an inordinate amount of energy, bulk carriers have to deal with ports being reluctant to deal with such huge amounts of explosive material.
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