Is the fact that your car is not in your driveway an advertisement to potential burglars that you’re not home?
A lot of people drive every day. So if the car isn’t there, it may be a good sign that nobody’s there. One exception might be in a one-car family where there are often people home even though the car’s gone.
I have a driveway, and a car to go in it, but don’t drive every day. So maybe leaving the car parked there while I’m out is a sign that somebody is home, even if really there isn’t.
For blocks of flats, you often can’t tell which car space goes with which flat. For some reason it seems to me that most landlords come up with some semi-random way of allocating spots to flats, often with the flat number bearing no relation to the spot number.
Some properties, particularly those built pre-car, don’t have a driveway at all. So the presence of a car can’t be used as an indicator that the house is empty.
(Some properties built pre-car have been modified not only to include driveways, but also to include car ports. I reckon car ports almost always look crap bolted onto a heritage house.)
Car insurance premiums are reduced if the car is parked off the street. Maybe home insurance premiums should be reduced if it isn’t… or if you don’t drive most days.