Boston Dynamics' DARPA-funded Cheetah robot currently holds the land-speed record for fastest running machine, capable of reaching a top speed of approximately 29 miles per hour. However, a team at the Korean Advanced Institute of Science and Technology (KAIST) has developed a robot of their own that may be able to best Boston Dynamics' efforts. The velociraptor-inspired Raptor robot is capable of reaching a top speed of roughly 28mph, though researchers told IEEE Spectrum it can reach an even higher mark at the expense of stability. Of course, neither machine are quite field ready yet since they require beams to stay put  — running free is more the purview of DARPA's BigDog and WildCat. But the competition is clearly heating up for faster (and scarier) robots.