Algodoo

My first (published) scene with this engine type. It's very powerful but a bit unstable at lower spawned balls' density.
This scene is COMPLETELY VARIABLES FREE, and because of that the gearbox is a bit tricky, but it works as a real gearbox, with the engine's RPMs. It always shifts at 50 or 51 rad/s! And it has a mix of mechanisms and scripting.
Dat engine is kinda good, even if it doesn't use fuel. It is acceleratable (the driver adjusts it) and it has enough torque for this test (carrying a 25kg box, and the total truck weight is 113 kg).
The suspension is front multilayer hingeConstant piston suspension, and the back is a simple leaf suspension that performs a bit weirdly, but works very smoothly.
It's lacking speedometer/tachometer/gear indicator but I'm planning to add that later.
Dat Controls:
UP accelerate
DOWN brake
SHIFT clutch
S starter

Sorry that I forgot to put controls.
Please comment!