We went from 3 cars in Michigan (!!) to 1 car in Dublin. We tried zero cars, but had a couple medical emergencies that convinced us otherwise. As with other consumer habits, time in Europe showed us a better way.
Now in Houston, we made a top priority of walkability--fairly scarce here, but doable. We have 3 grocery stores within walking distance. I am FIRE'd, but actively manage our investments, so you can say I am WFH. Both DW and I have our social groups, and with after-school activities for DS, the car is fairly well-utilized. If I am traveling alone, I will get a ride to the airport, or we will confirm with a neighbor or friend their availability in an emergency if I am gone.
I will also add our car is a plug-in hybrid, (Chrysler Pacifica) so the daily shuttling we do is all electric. I have a picture of the gas mileage reaching 65 mpg, but above 60 fairly unusual. We get gas every month or two, but I only fill it halfway, so the gas doesn't sit in the tank too long.
Oodles of cost savings. Understandable it's not for everyone, but it fits us like a glove--and not coincidentally, but by design.