There is Living with Less and there is the extreme edition by Lara van der Veen- smaller even than the Micro-Compact or the Tumbleweed Tiny Houses. Looking more like a tetris game than accomodation, it is a "Design of mobile, stackable sleeping units to provide people with a minimal, yet comfortable place to stay overnight. By stacking the required amount of units and combining them with bathroom facilities, a ‘hotel’ can be set up at any place, for any period of time." There is a vertical area to stand up and change and a horizontal area to sleep but litte else- one goes to a central hotel facility for washroom facilities.
more at ::lara van der veen via ::WMMNA