Yes, but how many of those homes have a garage? And how many of those garages are used for parking vehicles? How many garages are capable of fitting all vehicles owned by building residents?
^This! My current house has a driveway, but no garage. My previous house had no garage, no driveway, and no place to build one. The last house I lived in with a garage didn't have electricity to the garage. An electric car wouldn't have worked for any of them.