72 Billion. Its actually just 70000 Bugatti Veyrons. Puts things in perspective.
But why don't these Billionaires do something with their money. I would build me a personal skyscraper in Manhatten half a mile tall and live there alone. I would also put thousands of cams on the building and watch the city. At night I would project a huge Logo with my initials into the sky with the worlds strongest laser system. I would also place some mirrors on a few satellites and redirect sunlight to wherever I am. I could then turn night into day with my custom Iphone App when I feel like it.
Billionaires are boring people.