His name is Kebawah Duli Yang Maha Mulia Paduka Seri Baginda Sultan Haji Hassanal Bolkiah Al-Mu'izzaddin Waddaulah ibni Almarhum Sultan Omar Ali Saifuddien Sa'adul Khairi Waddien, GCMG, but you can just call him Sultan of Brunei.
He was once the richest man in the world, but he's since been usurped by Bill "Sultan of Redmond" Gates, who loves cars only just a little. Like most rich guys, the Sultan owns a lot of cars. Less like most rich guys, he has around 5,000 of them, including 350 Rolls-Royces, eight McLaren's F1, six Dauer 962 LMs, the only right-hand-drive Mercedes CLK-GTR in existance, a Lamborghini Diablo Jota, two Jaguar XJR-15, numerous Ferraris, Mercedes, Jaguars, Porsche, Bentleys and a Hyundai Excel he uses "just for popping 'round the town" (ok, we made that last one up.) AutoMotoPortal did a quick feature — much of it culled from Wikipedia — on the Sultan of Schwing's rides. Read on and weep.
Sultan of Brunei: His private automotive empire [AutoMotoPortal]
Bentley's Previous SUV: The Dominator [internal]