[thefounder]

Looks like the worst of both worlds at the first glance. However depends by the costs of batteries. In a world with an abundance/excess of green energy but expensive batteries to store it hydrogen makes sense. The conversion of electricity->hydrogen->electricity is quite inneficient so batteries better be cheap enough otherwise we will go the hydrogen way for cars as well.

[jonwest]

I think you’re under the impression that it requires the hydrogen generator? You can use the hydrogen tank if you are without somewhere to charge the vehicle, but you can also just use it as a traditional EV and charge as you normally would.

[thefounder]

Both hydrogen and batteries are energy storage technologies. My point is that it doesn't make sense to use one technology if the other is cheaper.

If batteries are too expensive then you would have an electricity -> hydrogen conversion at the power plat/wind farm.

[rnk]

Why not add a gas engine too, for places where you only have gas and not electricity or hydrogen? Because it's unnecessary weight to carry around. Toyota and Japan pushed hydrogen for a long time because their industrial base is so focused on gas/diesel drive trains. Their vast investments and expertise will be worthless as we leave it behind. They've also never made any progress getting away from hydrogen coming from fossil fuels. h is not a great fuel source because it's so much less dense than carbon fuels, you can't get far on one tank. It has two benefits, easy to refuel, and burning it doesn't produce pollution, but the negative of coming from fossil fuels kills it.