Banning unnecessarily big cars would be enough. My utopia would be a city where people all drive around in micro city cars like the Citroen Ami. It would fix 95% of the problems with no real decrease in living standards for anyone.
For the price of an ami you can get a lot of used car. Why is that relevant? Because small electric cars suck. They really do. Driving them isn’t pleasant, charging them mostly impossible and they are about as ugly as you can imagine. Not really something I’d spend 4 months of my income on when it is basically just a replacement for a scooter. Which can be had for 50€ and some dedication.