Hydrocarbon Fuel Cells for 3e

[Varyon]

Originally Posted by GURPS Fox

Figured that out. :(

On the bright side, it sounds like the setting ignores realism enough that you can justify markedly higher efficiencies than Vehicles assumes. Any setting in which everyone (except certain vehicles in the Sneaky Faction) has active sensors running at all times, and yet there's any sort of fog-of-war in play at all, is sufficiently unrealistic you can get away with whatever you'd like. Granted, you don't have to go all-out with it, but if you need a 4 MW LNG engine that doesn't require prodigious volumes of fuel... go for it.