i just had either a great idea, or a really terrible idea -
what about using an electrified axle in the camper?
my first two thoughts are related to regen and safety, but it seems like there would probably be a way to have the controller manually disengage regen and/or acceleration in event of an emergency, and it seems like regular control of regen and acceleration would be accomplished the same way it would be when mounted in the vehicle - not that i actually know the specifics of that...