The folks at Living Big In A Tiny House recently took a look at a truck that folds out into a castle complete with bathroom and shower turrets. The truck, created and occupied by a New Zealand family, is apparently road legal when compact.
The castle-truck is completely off-the grid. It is solar powered, heats water through a mixture of solar panels on the roof, a wetback fire, and gas, and it captures rain water from the roof that is then stored in water tanks below the truck.
images via Living Big In A Tiny House