The Hitch Hotel is a cargo box that doubles as a camping trailer, thanks to its wheel-less and expanding design. It weighs only 240 lb. and takes up only 16 sq.ft. when folded. But it gives you a 135 cu.ft. space when expanded.
Crowdfunded projects pose a degree of risk for buyers, so be sure to do your research and fully read the seller's detailed description and production plans before plunking down your hard-earned money.