My car-free zone is more limited by a) having to haul large or heavy items, b) transporting group of people or c) time constraints. In any of those cases it's usually taxi or rental car. The more I need to rent, the closer I am to actually buying the car. Currently I'm not even close to where car ownership would make sense financially.
We don't have many rental services close by that are open during weekends. Any weekend trips requiring rental car should therefore be planned at least couple of days in advance. That can be annoying at times.
--J