I knew about the cabins in Japan where anybody can sleep, but didn't know about this portable system. The difference (apart from the construction system) with the other one in Japan is that it can be yours. From its manual:
The SNAIL SHELL SYSTEM is a low cost system that enables persons to move around, change their whereabouts and live in various environments. One unit supplies space for one person. It is mobile both on land and water. One person can move it slowly, either by pushing it like a wheel, walking inside it or on top of it.
On water it can be rowed, moved by a kite or hooked up to a vessel, for example, a ferry. The unit rests on one flat side and can be anchored in lakes, rivers, harbours or at sea. On land, it can be placed in city spaces, fields, forests etc.
The SNAIL SHELL SYSTEM takes up very little space and can easily be placed in a discreet way. It can be buried in the ground, exposing only the entrance. It can also function as a comfortable space inside existing buildings.
Several units can meet up and form temporary communities.
The unit can be hooked up onto existing infrastructure like telecommunication lines and electricity cables (for example, by connecting it to street lamps).
If special devices are added, the unit can supply its own energy.
The SNAIL SHELL SYSTEM can also be used for transporting different items and it can provide protection for persons when they participate in situations like demonstrations.
Michel Bauwens says "