Algodoo

This uses a ballast to help get up the hills. There is rear and front wheel drive.

Front wheel controls:
Forwards: Right Arrow
Backwards: Left Arrow
Stop: Down Arrow

Back Wheel Controls:
Forwards: D
Backwards: A
Stop: S

Ballast control:
Move Ballast Right: Q
Move Ballast Left: E

When the vehicle is flipped upside down, the front and back wheel are switched and the control for the ballast is flipped as well. You can usually flip back by going up a hill.

Hints:
-When going up hills, move the ballast forward.
-When going down hills, move the ballast back.

This doesn`t have any suspension but I got through without it.