But actually, if cars disappeared, people would have an incentive to work closer to where they live. So instead of living next to a quick road connection, you could live next to a quick bus/foot/bike route. And others would do, too. And look at all the unneeded space that used to be streets and parking lots, ready to be repurposed into new houses and offices!
My old commute, prior to switching to full time WFH, was ~25 miles and took 25-30 minutes by car depending on traffic/stoplights. It would take me an hour to an hour and a half on a typical ebike, and it would be far too cold to make the trek 3 months out if the year.
>people would have an incentive to work closer to where they live
Again this is easy to say for people who have already made the decision. If over night cars became illegal many people would now be stuck with basically unlivable properties since there is no public transportation or at least not good ones.
I could move closer to my office, but I would have to pay twice as much for same living space and that is now when cars still are a thing. The prices would go up by quite a bit if you literally couldn't live further away. At least this is what I hope you mean, if you mean that I should instead look for a job near me then that would just be silly.
In reality, cars can only disappear gradually, with less-car-dependent infrastructure replacing them as they go, and prices adjusting together with that. If you want to find reasons that no-cars can't work, you'd do much better by acknowledging that their disappearance would bring wider changes to urbanism.
(Also, it's not unheard of to choose a job based on what's in the area. Academic couples do that quite often: when one moves, the other often tries to find a job based on where they go.)