LEGO MINDSTORMS Robot Inventor
This robot vehicle is fast and very maneuverable. The drive wheels are geared up with a 1:3 ratio for significantly more speed than a direct-drive robot, and the wheels are located in the center of the robot with the robot's weight balanced almost 100% over them. This allows for very tight turns and even fast spinning in place.
Drive it with one of the two remote control programs, or try the autonomous program, which makes it drive around the room like crazy, trying to avoid walls with its distance sensor.
For a normal speed version of this layout (without the gears) check out the Center Drive Platform.