a substantially spherical human living module or space has a plurality of pontoons projecting from its lower hemisphere . it is preferably arranged to be self - propelled , as a vehicle , and the pontoons are preferably extensible and retractable . in a version in which wheeled landing gear is provided , a spherical human living space is provided with helicopter blades and four jet engines at the bottom of the craft , and two jet engines on the right and left sides , which swivel for direction control , for propelling the device .