Someone from the german 7 forum contacted the seller and asked for the former owners name. Was a company car owned by E.O.N. group, and for the President of that company.
http://www.eon.com/en/index.jsp

That car is terribly heavy, there are also steel plates
http://www.realoem.com/bmw/partgrp.d...56&hg=72&fg=20
http://www.realoem.com/bmw/showparts...=72&fg=99&hl=6

I have asked my German friend to contact seller to get some more pics from the control panel switches in center console. Must be interesting to see these.
Have you seen these funny things inside the doors? As it says "active defense system", that could possibly some' holes' for the weapons to shoot thru the closed doors.