I know this is out of left field, but I have no idea how they build these prototypes. Granted, computer engineering. But physical making the custom door panels, the beautiful instrument panels, I would love to be able to understand how they do this. I can't imagine there are any books describing how to build this sophisticated of a shape. It completely baffles my imagination. If there are any of the actual design engineers reading this board who make these, how do you do the voodoo you do?