a cygnus ??
SK 2 is an S55 AMG in white as far as I remember, I have seen him at the F-8/2 Park Road Masjid (the car not him:) ).
The SK 1 or SK 3 is a 7 series in black as far as I remember, and the SK1 or SK3, (the other) is Hummer H2...just cant remember which witch is which..but hes damn rich. My guess is the "SK" is for "Sialkot" and mayb he was the owner of some goods exporting factory (sports) and made billions there or something and came here to retire in an S55. But where in Pakistan are you gonna drive with a 5.5L engine, it freaks me out:p