I'm not advertising this by any means. I'm sharing it as a possible source of ideas. It's unlike anything I've seen here.
Most notably, you don't sleep in the trailer - there's a tent on top you fold down by grabbing a pair of ladders.
They're targeting preppers and the name of the company is an acronym for "Bug In Bug Out"
http://www.bibooutfitters.com/
ETA - cleaned up the title - looked like I had a spasm on the "C" key.