I figure there should be a good thread for minimal living spaces that are worth looking at. Someone mentioned www.stealthsprinter.com in a side thread and I'm glad I saw it - amazing work they did!
I was just looking at this:http://www1.ttcn.ne.jp/~gyo/English/campingcar.htm - and figured it needed a place to go on here too. This thing is insane. Some Japanese dude fabricated a two-story house that folds down (!!!) into a small truck trailer. It's all mechanized, with pneumatic cylinders that lift the entire second story up. The second story is this immaculate Japanese tatami room with shoji windows, and the downstairs is a kitchen, bathroom, storage - outrigger dock with a 2 meter wide deck that folds out.
It's super conspicuous so it wouldn't work for boondocking. Rather, I should say, it's inconspicuous when folded down, but when you need to live in it it's like a Transformer and would stand out like a sore thumb. But it's really gorgeous.
When you find cool minimal / mobile living stuff post comments! I love looking at this stuff for inspiration and ideas.