Algodoo

A single wheel car with a clutch and brake. Shift for clutch, down for brake, up for throttle up, down for throttle down. There's a steepnes test on the right, and with 100 friction on the tire, this car can go up about 80 degrees with ease. However, when you load the scene, it has a more realistic 30 friction. The lighter gray outer circle is the tire the car rides on.