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It looks almost like any other shopping cart, except sensors allow it to follow the shopper around the supermarket and slow down when needed so items can be placed in it, and it never crashes into anyone's heels.

Gregory Garcia dreamed up the robotic cart to solve a childhood peeve of being accidentally hit with shopping carts by his sister.

His cart, also known as B.O.S.S. for Battery Operated Smart Servant, was one of about 30 robots on display Wednesday by students at the University of Florida, who worked the past semester on the projects using their engineering backgrounds.