www.enchantedage.com

The ODE physics library (http://www.ode.org/) has been around for a long time. Often, people ask "how do I do a good arcade car" or "how do I do a good character simulation" using ODE.

I wrote the RayCar demo a long time ago, to show how to do exactly those things. It also does some other things, like show how to render light mapped geometry using D3D shaders, and using an XInput game pad controller, but mostly it's about the physics.

The original article describing the demo is below: