this is basically nearly every parking lot and the amenity or infrastructure it's supposed to serve on account of cars are a lot bigger than humans and the average ridership is like 1,2 - 1,5 people / car depending on where you are.

I used to work at a place where my colleagues car got more space alloted to it than our shared office. If we factor in this was a multi-story-building we got about 1/3 of space for two people than 1 car