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.
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.