Wow, some Very good stuff here!
Will have to go back and read the details more slowly.

Stansbrew brings up a good point about diesel.. you can idle it all night if you had to. From what i understand many military vehicles are diesel, so when enemy fuel is captured, the diesel engines aren't very picky about octane or refinement.

As for vehicle.. i've thought about different things.. but still not sure yet.
4WD is a given. But big, medium, small? 4-cylinder engine for fuel efficiency?
These are some of the things i'm mulling over.

The same caliber rifle/pistol idea is neat, but I live out in the desert.. so range, downrange punch are important to me.
I'm currently researching buying or building a "Jeff Cooper Scout Rifle" bolt rifle in .308 for my "one" rifle, i'd prolly do a carbine.

But anyways.. Great thread! i have a lot to learn..