I ride a class-3 Tern cargo bike with 400Wh battery and this range is very optimistic, especially since this is pedal-by-wire. Also what happens when the battery runs out, because you can just ride without assist on any Bosch e-bike.
Game over with a dead battery, I would think, though I suppose it's possible that the generator you're pedaling is enough for very slow movement without the battery boost...
go to spz.penize.cz and lookup license plate 001CYBER, legally registered in Czechia
go to ufg.pl and lookup the insurance policy for license plate S1K6, legally registered in Poland
both countries are EU members and you can drive those cars anywhere in the EU
Afaik there are some ways to get approval for individual vehicles to be imported in the EU, even if non compliant with EU rules, for specific purposes and with a case-by-case basis, which grants such vehicles an exemption.
This requires a per-vehicle (not per model) specific flow which may take long and cost a lot, and you may be fined if you use the vehicle outside its stated purpose.
I can remember some collectors importing cybertruck indeed, I don’t know the limitations for its use.