My suggestion would actually be "hotel" for most people.

But if you own a camper, you should probably have the means to move it on short-notice. If the waters are rising from a storm near my parent's house at 4am they can move the RV. Theirs is a Class-C motor home, so it can drive itself, but if they'd gone with a towable model they'd need the ability to move it.

There's also a class of people who basically live full-time in campers. Some are retirees. Some are people who work jobs that require them to bounce from place to place for a few months of work at a time. These are people who could, in principle, benefit from something like this.

There's also a safety factor for the drivers, depending on the reliability of the system. Having a massive trailer attached to your much-smaller vehicle can be disastrous in a wreck. Allowing the trailer or main vehicle to crash separately from the other is a good thing.