Random idea: Inner-city multi-level caravan “park”
Implementation: Build a big “car park” for caravans in the city, letting people stay in the city with their caravans, keeping it cheap but convenient. Astroturf it even.
Up and down ramps will need to be wider than normal, and height of levels will also need to be more than normal, possibly. Width of parking slots would be wider too.
Why it won’t work: I hate caravans.