Updates. I'm pretty much done with what I'm going to model with the interior. Just have to do the dash gauges. I know there's stuff missing, but 99% of people wouldn't know just by looking. Sometimes I think you gotta trade accuracy for what you can get away with.

Clopper, I used a displacement map with an additional link between the out color of the texture file and the material transparency. That way, the displacement map acts like it's own transparency map. Just make sure the parts you want to be transparent are the white parts on your texture file.