Most people pack up the summer house come fall, but designer Michael Jantzen foresees a time when they'll pack it away instead. Jantzen's concept Hide Away house, made predominantly of fabric, folds up for storage. Yet it features all the comforts of home, including hot water, electricity, a bathroom, and heat. During the off-season, hard shells store the water-gathering devices, solar panels, sewage treatment tanks, and other off-the-grid necessities, as well as the fabric walls and ceilings. Everything fits into the back of a pickup truck.