Let's face it, we're doomed as a species, because one day, Boston Dynamics is gonna unleash its army of DARPA-funded droids and wipe us all out. The company's sprinting robot, Cheetah, has now broken the land-speed record for humans, clocking speeds of 29.3 miles per hour, meaning not even the 27.79mph Usain Bolt can escape. Fortunately for us, it's got a fatal flaw; a balance problem that means it can only remain upright with a boom keeping it steady. Unfortunately, that's not going to be a problem for long, since field-testing on an independently upright version begins early next year. We'd wish you sweet dreams, but, you know, we're too busy building an underground shelter.