Stanford university's uBots have pulled off a feat that makes ants look like slackers. Working in concert, six of the robots managed to tow a 3,900 pound car, despite weighing just a half-ounce each -- much less than other car-towing robots. The secret, according to the team, is biomimicry. The wee bots are designed to imitate gecko lizards with sticky feet that can support a heavy load but still detach easily. In previous experiments, that allowed them to climb up walls and pull heavy weights. This time, the robots are channeling ants by working as a team to pull a heavy load.