06/09/2012 11:02 BST | Updated 06/09/2012 11:05 BST

US Army's Robot Cheetah Faster Than Usain Bolt (VIDEO)

Do you remember Big Dog - the US Army's prototype walking robot? If you do, you'll recall it was a slightly comical, slow and lumbering four-legged beast.

It's evolved.

Built by Boston Dynamics and funded by the Defense Department research division (Darpa) the robot has a top speed of more than 28kmph.

"Keep in mind that the Cheetah robot runs on a treadmill without wind drag and has an off-board power supply that it does not carry," said a press release.

"So Bolt is still the superior athlete."

Take a look, above, and then flee. FLEE FOR THE HILLS.