Algodoo

To read a more in depth description check out the original version.
The main change in this version is that there is a much more punishing track. There are also other changes, for instance the suspension is softened to suck up larger hits, and the rear wheel suspension is angled, so that it works more effectively.
Please Comment and give suggestions. I hope to perfect this design, and the more feedback, and bug reports I get the better.