In NYC, the people with the fancy cars take up 2.5 parking spots, and the people with the driveways take up 2 parking spots. One for their driveway and one for their car.
Correction- we have a driveway and only use 1&1/2 parking spots. And that’s because people block half of our driveway and it’s impossible to get into half a driveway so we park a block away.