THE SULTAN OF BRUNEI- Hassanal Bolkiah.
In 2009, I read about this man. I was enthused not because he was the 2nd richest King/Head of state (after the King of Thailand); but by his amazing fleet of exotic automobiles.
With 6,000 cars (including 500 Rolls Royce cars; which earned him a Guinness world record), 1 ‘tricked out’ Boeing plane, 6 smaller jets, and 2 helicopters; he is second to none in automobile collection. He owns a number of concept cars; it is safe to assume that he’s the only one with those cars. Some of them are: The Bentley Java and The Bentley Dominator 4×4.
He is a trained pilot, so he flies his planes himself. He also owns (bought) Every formula 1 car driven by the world champion since 1980. Most of his cars are kept and serviced in 5 plane hangars.