I do.
My friend has an incredible car collection and sometimes he unloads them like this guy (many of my friends autos, around 50 of them, are cars he wants/wanted at one time. They are not necessarily "collectable"). Some people have too much money
Here's an M5 listing from same seller:
http://autos.yahoo.com/used-cars/bmw...mw&distance=50
Another, 740i:
http://www.cars.com/go/search/detail...eadExists=true
His name is Gregg Park and apparently he's involved with the Pebble Beach concourse show and manages some of the finest car collections in California.
His photobucket:
http://s451.photobucket.com/albums/qq237/biggar1111/
Also know as BigGar on the M5board.com and the MBworld.org