Nothing can stop these little guys. Panasonic's Evolta battery-powered robots were already pretty impressive, but now they're going for a hat trick of endurance-testing awesomeness by taking on Hawaii's Ironman Triathlon later this Fall.

The triathlon entails surviving three courses: one for swimming; one for biking; and one for running. Above-normal humans are expected to run the 138.6-mile course in a single day. These robots will get a week, with breaks only to recharge their batteries.

Their next trial? Take down a family of bears with their bare plastic hands. That's what I want to see, anyway. [Engadget]