Last November, the Saudi prince billionaire investor purchased an A380 "Flying Palace," a double-decker aircraft that is the largest plane manufactured by Airbus. In December, the Daily Mail reported that his royal highness will spend an additional $177 million to customize it; that's more than half the purchase price of the plane. Plans for the complete Airbus makeover include a marble-paneled dining room, Bedouin-style sleeping quarters and a tilting whirlpool bath. And, of course, a missile system to defend the aircraft against attackers.