Having read on another thread about a gas fridge on a boat has made me wonder about a 'three way' caravan fridge on one. I understand that there are problems with them on gas if not level so that limits them but they can also run off 12v or mains. You can get one off eBay for > £100 so much cheaper than boat stuff. Also you could probably strip out the guts and use them in an icebox.
Has anyone done this?