Unity 5.0 physx 3.3 vehicle physics

So Unity 5.0 uses physx 3.3 which significantly changed vehicle physics. Any idea on how much of this will be exposed in the API? 3-Wheeled, N-Wheeled Cars, and N-Wheeled Tanks for example? Tank treads?

https://developer.nvidia.com/sites/default/files/akamai/physx/Docs/Vehicles.html

Very interesting, will be nice to see what we will have access to.