Ok, so assuming the Nuclear apocalypse is to be an international issue, who's to say the UK wouldn't be affected? Basically, that's how I arrived at the conclusion that the Westland Scout would be a suitable Fallout vehicle (if set in Britain) for this challenge. Designed and first flown in the 50s, this also puts the real world Scout in the correct time frame for the Fallout series, making it plausible to think that there may have been a few of these uuuhh...lying around (?), just waiting to be claimed by Scavengers and transformed into the serrated monstrosity we see here today. The frame structure around the cockpit has been removed, and a long range fuel tank has been installed in where the co-pilot seat would have been because, y'know, that's all people want to do when the world ends...the more fuel the better. Handling wise, you'll manage this thing just fine if you take it easy (barrel rolls not recommended). Gradual rolls left and right won't cause you any problems, and take it slow when flaring off/slowing down. Happy hunting :P