Decades ago, the Vespa scooter changed the way people drive around cities. Now Piaggio Fast Forward--a division of the Piaggio Group, which developed the Vespa--is trying change the way they walk. Once users don a special belt, the Gita can follow them around, carrying as much as 40 lb. of cargo and using stereoscopic and fish-eye cameras to avoid obstacles. In the future, once Gitas have mapped a route, they may even be able to navigate on their own to, say, deliver goods. "We're inventing a new form of mobility," says PFF CEO Jeffrey Schnapp of the Gita, which is slated for commercial release in 2018.