17 cool gadgets that tease the future

This sidewalk robot will hold your stuff.

The TwinswHeel -- which resembles a rolling ice cream sandwich -- is a parcel delivery robot. It uses built-in sensors and cameras for "shape" detection to lock onto its human's location and then follow them around, like a puppy or "butler."

Each side consists of a a large, rugged wheel. A container is squeezed in between for carrying cargo like shopping bags or tools for construction.

The French company intends for it to be used at hospitals, farms, restaurants, in the military and "space conquest."