Algodoo

left and right to control
1 to turn on half the hover engines (unstable when stationary, toggle)
2 to turn on other half of hover engines (toggle)
x to quick stop hover engines (like brakes on a car, toggle)
the car is more stable when going fast, you can also do left and right to do a backflip IF YOU GO AIRBORNE, otherwise you may just flip over
{self balancing through direction of rotating objects hitting the ground}
{can flip itself over if it is almost completely flipped, manual flip over through 'bakcflipping'}