CyPhy Works and UPS tested a delivery drone on a three-mile trip from Beverly, Mass. to a YMCA camp at Children's Island. It took about eight minutes for the drone to deliver an asthma inhaler to a child on the island.
Robots that are free to move around their environment generally use wheels, tracks, or multiple legs to get around. But those aren't the only methods. Just like animals, some robots have very unconventional ways of moving.