7 robots too expensive (or lethal) to own

Carnegie Mellon University's Highly Intelligent Mobile Platform -- Chimp, for short -- is appropriately named. Chimp can stand on two legs and use its much longer front arms to lift up to 300 pounds.

It's shorter and bulkier than its companions Atlas and Valkyrie, standing at 5-foot-2-inches and weighing 400 pounds. Chimp doesn't walk. Instead, each of its four limbs has tank-like treads, so it kind of rolls along.

Chimp has laser radar beams shooting out of its head, which create a three-dimensional map that lets operators see its surroundings, almost like a video game. But Chimp can do most minor tasks -- like moving, turning valves and keeping from falling -- on its own.