I keep hearing the excuse for hydrogen being things like freight trucks that need hundreds of kilometres of range. It seems that for a fraction of the cost of

I keep hearing the excuse for hydrogen being things like freight trucks that need hundreds of kilometres of range. It seems that for a fraction of the cost of building hydrogen, they could outfit them with pantographs and run trolley wire over major highways; suddenly, you only need 100km of battery when you get on and off the freeway instead of 800 for a day's travels.