[BigAls87Z28]

Most of the cars you cant sit in are due the fact that the interior is mostly made of super hard plastic, and not ready for production. They put on a finish to give it a nice look, but if you were to ever sit in these vehicles, you would jump right out. And thoes that do have a finished interior, its most likely one of a handful of preproduction cars, and they dont want to have the interiors of there mega-expensive cars busted for when they show it off and try to impress the public.
Either way...they need to get production ready cars out of the darn sales floor.

I look foward to finally being able to sit in a new 'Bu.