That's an exception, most homes have driveways or garages, there being places with less driveways doesn't explain the nationwide trend
https://www.racfoundation.org/media-centre/cars-parked-23-hours-a-day
https://www.racfoundation.org/wp-content/uploads/standing_still_off_street_parking_by_LA_A-Z.pdf
Most places that have less than 60% driveways are in London or other major cities with transit networks.