I don't see these other people as fellow developers, but as golf-playing executives or their children.
I'm aware that not everyone here is a dev, but we mostly have similar careers.
I live on about 30% of my salary. Unless you're in the bay area or have a family to support, that's plausible (and honestly pretty comfortable) for most developers. If you wanted that car, you could have it.
Not everyone here lives in the US. Making SV salaries here, where 99+% of people are making under $80k/year, would be obscene. If I had access to that kind of money, I'd be putting it into better housing (penthouse?) long before ever thinking of buying a car like that.