That's what I'm thinking. I've said for awhile that if one of our cars goes (or has a large repair we know isn't worth doing -- they are both old) that we should just try with 1 for awhile. So while we're helping our son out, it's been a good experiment. I keep saying that if I had an ebike, it would take care of 90% of what I'd want to do if he was using "the" car. Ride up to our pool, ride to the library, ride to the closest grocery store -- all do-able without getting onto busy streets.
We would likely not buy a brand new car, though we haven't even looked at how insane used cars are, so perhaps that's not true. I'm just hoping we don't need to buy one anytime soon. Our cars are old but I love them being long since paid off, low insurance, low taxes. I had some Hertz points (that I always find hard to use) and we decided to use them to go to an out of town wedding a few weeks ago, just for fun. It was a VW Touareg which was lovely. We were like "hmmm, this is nice". But after about 100 miles, my DH found a few things about it (just minor comfort stuff) so makes you realize that a test drive doesn't always shake all that out. We were impressed with the gas mileage on it!