I have been a Beta tester for VRC PRO
It runs much smoother than the original and i have found the cars to handle a lot more realisticly and when set up correctly are much easier to drive. The kirbs on the tracks are far more forgiveing and you can run over them like you can on a real track without a penalty as in the original. You don't need to buy cars unless you want a proper manufacturers car as the supplied cars are ok.
The electric tourers are really excellent as are the carpet tracks.
Just the tool required to practice on those long winter evenings.
The multiplayer online is excellent and it is great fun racing people from all over the world.
I hope this helps a bit
