Hydrocarbon Fuel Cells for 3e

[Rupert]

Originally Posted by GURPS Fox

True, and let's be honest, by tripling the fuel consumption, we'll get immense problems with getting fuel, especially when you've only got, say, a Fennek's volume to work with and need a good operational range while carrying five guys in power armor.

A Fennek has an operational range of... 860km/530 miles and it's roughly 10.4 metric tons (or 11.5 US tons). In comparison, my current humvee-type vehicle has a 10-hour operational time, can move at 64.4km/h off-road, and weighs in at just a smidge over 24 metric tons.

It makes the rules rather hostile to ICE in general.

Not really, because most vehicles don't move at maximum speed all the time. If it's doing ~30 km/h off-road rather than the maximum, it will be using 1/4 the power and thus 1/4 of the fuel it uses at full speed/power.