MIT's scientists spent years making the Cheetah robot a more efficient runner. Now that's done, its creators probably thought it was time to give it a major upgrade: the metal quadruped can now autonomously jump over hurdles like a trained horse. Yes, it can automatically detect and leap over multiple objects while it runs -- even without a tether. The scientists claim it's the "first four-legged robot" to be able to do so, and we'll bet they'll train it further to leap over much higher walls, as well as give future machines the same ability. Now where can we hide?