bobmn,
If we are way out, and forgot eggs, we'll do with out.....
The SxS, is for fun, and will have a street legal kit, so we can drive it on the street, if need be. The Volvo, can be driven anytime we want.
The 5er has a built in 5500 onan that runs on gasoline. There is a filling station on the left, rear, side, for filling toys back up. It's 30 gallons, and feeds the onan too.
Built in "safety", doesn't allow the gas station to totally drain the tank, so there is gas left to run the onan.