We were a one-car HH from 2015 - 2022; however, we are just two people without kids and I WFH during that entire time while DH was FIREd for most of it. It worked out great for us, but I realize our situation probably made it much easier than people with kids or couples who both work at offices not in the home. We decided to go back to two cars in 2022 as I was preparing to fully FIRE and knew I'd want more access to a car to go places, visit parents, etc. Plus, we can afford it. Has it been totally necessary? No, not at all. Do I like having my own car that I keep as clean as I like? Yes, very much so. I am a minimalist and keep my car clean and free of clutter. DH, not so much.
Sorry, totally off topic for the subject of this thread, but thought I'd add my two cents based on some other recent comments.