Saudi prince buys world's first 'Flying Palace' By Aislinn Simpson Last Updated: 3:07pm GMT 12/11/2007 A Saudi billionaire has raised the stakes in the rich mens' toys game by investing in the world's first ever "Flying Palace".Rumours have been swirling for some time about who would be the first to sign up for the "VVIP version" of the new double-decker Airbus A380. Prince Al-Waleed signs on the dotted line to purchase his Airbus 380 at the Dubai air show Commercial airlines including Singapore Airlines have already taken possession of some of the planes and during last...