It does depend on where you live. In US they probably do. In EU countries they probably don't.

But they get their groceries from stores that deliver goods via trucks.

The poorest citizens certainly don't own the most extravagant of all luxury items, homes near (decent) transit.

A metro's most car-dependent are its working poor, who need to live the furthest away from the downtown core to afford housing.

Actually they are the only one owning them because they need them

They live outside the cities where housing is more affordable but there's no public transport