It's not really fair to compare the efficiency numbers directly that way. The efficiency for hydrogen is measured from the hydrogen fuel directly, but the efficiency of the EV is measured from the wall. In reality, generating electricity is about 40% efficient at best. Yes, there's also an efficiency cost to refining the hydrogen, but if we compare apples to apples and take a ton of LNG and use it to power an EV versus a hydrogen car, I doubt the EV is going to get more milage.

Sure but you should be comparing the goal end state, a world in which out energy consumption and generation is green, that's the whole point of our move to bev's and hydrogen. So you should be comparing energy generation by green means to power a BEV or using green energy to produce hydrogen to power a hydrogen car. In that world the whole energy production and consumption chain is about 3x as efficient for BEV, which in my mind means there is no way hydrogen is going to be competitive and we shouldn't waste valuable resources on persuing it.

Hydrogen that doesn't come from the natural gas industry requires that very same electricity to be extracted from water - so they're operating from the same baseline in my efficiency calculations.