The Bugatti belong(ed) to the designer Bijan who died last year. He used to park it in front of th store everyday when he arrived at work and now someone else does it. It has been vandalized a few times while sitting there. He used to park one of his many other cars there as well, but this was the most recent and expensive (I think). The home of $50,000 suits and once was considered the most expensive store in the world.
Full article: http://www.rolexforums.com/showthread.php?p=3250263