Talk:United States Navy/@comment-26441026-20150916042058/@comment-10905876-20150917044030

Well, RP earth is larger than irl earth, so it is reasonable to assume that there's proportionally more oil reserves. Other life supporting planets also would supply oil, and are largely untapped. Also, something like pond scum bio-fuel could be used to supplement oil reserves. That stuff is on par with standard gasoline without the hazardous corrosion of corn based fuels, so that also helps.

And, fusion based systems power most land based installations, so more can be diverted to things like military vehicles.