Algodoo

left arrow - to move to the left
left arrow + up - to move to the left on low gear
right arrow - to move to the right
right arrow + up - to move to the right on low gear
down arrow - to brake
down arrow + up - to brake on low gear

In the third version I have added a track created by me, both division on raised and a hill-climbing gear.
The hill-climbing gear can help to overcome an obstacle when one wheel slips and another does not have not enough draught to turn a wheel. For hill-climbing gear inclusion press standard arrows of movement and press an arrow "upwards".
Also I have put terminators of a course of a suspension bracket which will not give to her will be turned inside out at strong falling.
I have cleaned all headlights, because they too lagged.
As I have strengthened springs and the suspension bracket became more rigid.

Have phun!