BEPUphysics

i'm totally new to xna coding but where do I put that information(for the main car body) and how do I load it? Is it in the VehicleDemo.cs, PhoneGame.cs or VehicleInput.cs? can you give me an example?

how can I use the vehicle demo with a custom car model (just like in jiglibx) instead of primitives. I also noticed that the fbx wheels used in the demos are symmetrical: how can I implement asymmetrical wheel models and orient them properly?