A rare glimpse of how a single motor can control multiple limbs via a cam shaft. That's about all of the inner workings of an automaton you'll find on the goog. Making a self propelled quadruped by having a single powerful motor turn all the limbs was appealing but much more complex than multiple motors. Then, fully exploiting the ability of legs to overcome obstacles would require a full elevation map of the terrain & the logic to avoid the obstacles. It would be as complicated as building a Falcon 9, taking multiple lifetimes.
The good news is the DJI Mavic appears to be the 1st quad copter suitable for replacing ground based exercise robots. It would only work for 1 mile at a time, but it's finally stable enough to be controlled by the same single handed controller that the ground based robots use.
