[mlindner]

The Nikola comparison is apt here, though I think this is even worse than Nikola. There's known examples of fuel cell powered large vehicles.

[thombat]

Absolutely - the only thing about Nikola that looks dodgy on purely physical grounds is the claim of super-efficient electrolysis. Whereas SpinLaunch seems quite uncoupled to reality. Meaning of course the reality is that they'll run giggling to the bank...