In this guest lecture, we will cover two recent research thrusts from the RobotiXX lab in taking RoboRacer off-road: high-speed off-road navigation and wheeled mobility on vertically challenging terrain. For high-speed off-road navigation, we will introduce a sequential line of work with every work inspired by and built upon its prior work, ranging from inverse kinodynamics learning based on inertia and vision to forward kinodynamics to enable competence awareness. For wheeled mobility on vertically challenging terrain, we will introduce this new problem formulation and a recently developed ecosystem around this topic, from research infrastructure, kinodynamics modeling and planning, to off-road mobility learning. We will also share the latest research on combining these two thrusts, i.e., making high-speed vehicles safely fly over uneven terrain through in-air maneuvers.