The Robotics and AI Institute has developed Roadrunner, a 15 kg bipedal wheeled robot prototype that switches between side-by-side and in-line wheel modes and stepping configurations to navigate its environment (https://spectrum.ieee.org/roadrunner-bipedal-robot).

Roadrunner features entirely symmetric legs allowing knees to point forward or backward for obstacle avoidance and specific movements. A single control policy was trained to handle both side-by-side and in-line driving (https://spectrum.ieee.org/roadrunner-bipedal-robot).

Several behaviors including standing up from various ground configurations and balancing on one wheel were deployed zero-shot on the hardware from the Robotics and AI Institute (https://spectrum.ieee.org/roadrunner-bipedal-robot).