The fastest living thing on land is widely accepted to be the cheetah. In fact, the cheetah’s design inspired Boston Dynamics’ robot of the same thing, which currently holds the record for the fastest thing on four legs. What about two legs, though? We have Usain Bolt, who tops out at 28.3 mph. Certainly the fastest, right? Not anymore. Researchers at the Korea Advanced Institute of Science and Technology (KAIST) have created a robot that runs 28.6 mph, and they call it “Raptor.”

Of course, there is one major qualifier: Raptor, in reaching its impressive speed, does so only on a treadmill and while attached to a beam for support (the same is true of the cheetah robot, as well). What makes Raptor so unique is that the scientists were able to crank a lot of power out of its small frame. It weighs just three kilograms, as its two legs are made of lightweight composite materials. Raptor also has a tail, which performs many of the same balance and stability functions as an actual velociraptor’s tail would.

For the feet, the team used blades not unlike those you might see used by amputees in the Paralympic Games. Raptor is also surprisingly uncomplicated. It uses just one motor per leg for locomotion, and its controls are also incredibly simple. It runs on a program called a running pattern generator, which controls gait and speed. Despite this simplicity, Raptor’s design allows it to run without stumbling, even when researchers place obstacles on the treadmill.

The KAIST team is now working to fine tune and perfect Raptor. Of course they want ever faster speeds, but even more exciting would be a version that can run without the aid of a beam or treadmill. Maybe then Usain Bolt can have a go at one.