> The bottleneck for free range was always the battery - which was solved by the mobile phones.

I wouldn't say solved here. Significantly improved into usability yes, but there are still big issues with batteries:

- their low energy density means it's essentially impossible to have a long range in a small car, every long range EV is necessarily quite large, yet still has a shorter range than a city car

- specific energy remains meh, contributing to weight inflation (though by no means the only factor here)

- low temperature performance remains dreary and something you have to manage (and possibly hack / work around e.g. if your car only does automatic battery conditioning)

- while I think fast charge times are a bit overblown as a single driver on long trips (because stretching / resting every 2-3 hours is a good idea anyway), if you have relief drivers and can relay they're a significant impediment

Not that I think hydrogen has any future mind. But EVs do have a lot of drawbacks. And the amount of power you need available to charge a bus fleet in reasonable time is significant if you do pure battery.