I had to switch back to an older driver (61.76) for my GeForce 6800. I run the d3d.exe on Win XP Pro SP2, the game crashes every few hours, but thats "normal". Also deactivate FSAA and AF in driver options.
btw. this game still rocks! Its driving style is unique and the physics are still top notch. Only the landscape could use a lot more ploygons.