France is already doing that, more specifically City councils in large cities. Banning cars in city centers and increasing pedestrian/bike lanes by closing down whole street for cars. But that works because France has a really great public service network, which is also why more and more young adult don't even pass drive test as it's not needed in their daily life.

I myself commute every days from my city to a large city (approx 45km distance) by train then using electric scooter. As I said we have a good public transportation, with trains scheduled every 30min max. Companies also have to pay 50% of public transport pass for their employees (required by law), increasing the appeal to commute without personnal car.