What do you think it would take to start using hydrogen powered vehicles. I admittedly dont know much about it but ive heard that its apparently both doable and significantly less hazardous to the environment than elextruc cars.,(reply>), I know that it's already being done in Europe for long-haul trucking, and that it will likely not make sense to go electric for <b>that</b> (because of the low energy density of batteries compared to fuel tanks or hydrogen fuel cells); the key thing to invest in will be refueling infrastructure, just as recharging infrastructure has historically been a barrier to mass EV adoption in the US.