Newest experiment using Jiglibflash and Away3DLite, requires Flash Player 10. The speed boost in comparison to PV3D and FP9 version of Jiglib is unbelieveable (over 3500 triangles and realtime collision detection). It’s a work in progress, but you can take a look here: Letters and car 3d physics demo.

Using jiglib car physics in Away3DLite is pretty hard, I don’t know why it differs so much from the PV3D version. If the car starts to behave ‘crazy’ or gets stuck, press the ‘r’ key to reset it. You can also throw a snowball by pressing ‘b’ key.
Use arrows to steer the car and space bar for handbrake.