No, that's absolutely wrong, but maybe you can order special DVD installation, but it would cost a lot.
The M5 in Frankfurt IAA 99 had 2 16:9 screen on each back of the heads of the front seats and Playstation installed (the console was in the middle of the rear seats). Maybe it had a DVD kit too.
I wouldn't be surprised if on 2001 model a DVD option would be available.