My old neighbor actually owned a big steel mill near where I lived, and had an m2 + some regular suv’s. The only other (near) billionaire I know bought a Porsche for his wife. I don’t know what he actually drives, but they’re rich as fuck. They bought a brand new landrover for one of their kid’s poor boyfriend. I’ll say though that most of em don’t buy supercars, and you tend to see a lot of BMW/Mercedes/Porsche. And a LOT of g-wagons, like holy shit. I’m a burger though, so it’s different here.
I also knew this guy who moved to London for work, and he didn’t even have a car for his time there. Paid an arm and a leg and then some for a fucking closet in London though, when we went to visit London, our hotel was bigger. He did travel a ton for his job, though.