Wheeled robots are pretty common but they are not always capable of overcoming rough terrain. Robot with wheel-legs are more versatile but can be slow. The Speedy Whegs robot is different though. It is a fast whegs robot that can not only climb obstacles but also run at speeds up to 44 km/h.
The robot has a 3-gear transmission system that lets it adjust torque ad hoc. The above video shows it in action.