This was something we talked about when working on the garden shed and toyed with idea of free range garden sheds. Ultimately it was decided to restrict them to housing due to some of the challenges with getting storage to work outside of a house, and also the issue with placing these in the world and any briefing that may be the result. As far as gypsy wagons, as Petra mentioned, the fact that the land is not flat creates a huge technical hurdle that would make something like this very difficult. Awesome idea none the less though!
