![Image](http://images.plurk.com/4ZgHi3N05RWZfPDflP6p.jpg)
This is a different truck, but a working one which I am learning to do the physics and scripting with.
![Image](http://images.plurk.com/26pO7XtsXqrtUTadlP6p.jpg)
here is another of the environment (the red square is 256m for scale)
![Image](https://images.plurk.com/7wxDgsoz1TPZa3VblP6p.jpg)
and a video another person did of them surfing down the mountain
http://youtu.be/JOV-BYNN72Y?t=25