I am pretty sure that this is what we will end up with:
All cars have cockpit view (ie camear can go inside the cabin)
All cars will have cockpits modeled (ie they will have guages and dials and what not appropraite for that car)
At this point I believe the 170 cars will have interior mechanical components modeld (ie engines, maybe inside the truck... stuff that you will see when body parts fall off, this being because when the body parts fall of, they don't want you seeing empty engine bays or unmodeled parts.
These 170 cars will be the racecars.
That's all gathered from little bits and pieces of a bunch of interviews and common sense on what kinds of things go together, what makes sense coding wise and what would look good.
That's my best guess.