Ahhh, now I see where you are going.
If you're wanting to run things low impact, I'd suggest a Dodge/Ford/Chevy crew cab 4x4, maybe with a camper shell on the back. As far as a SUV, I'd tend more to a Land Rover style vehicle i.e. one better suited for cargo hauling then some Yuppie POS. That also opens up the fusion question.
If you are looking to be non-threatening, multi-fuel may still be a better choice from a blending in point of view. Team pulls up to a local, dressed in civilian clothes and inquires about the possibility of trading for fuel. Offering some of the contents of the trade pack or medical treatment in exchange...If you don't want to use multi-fuel, then electric, with two or more of the vehicles fitted with a fusion generator for recharging?
Hmmmm, a team that has been pried out of their resistweave, denied thier errr big turret, and forced to interact with the locals in a give-and-take.....I can think of at least three people who will be at a complete loss!!!