Here are a few suggestions that require creativity rather than destruction. I am astonished when I see the gigantic traffic jams at the toll stations on the autostrada, polluting the air quite unnecessarily. Solve this problem. There will be a guaranteed success. Optimise traffic flow in the cities by better planning and by connecting all traffic lights to a central computer.
Traffic jams cause a chain reaction of wasting of energy.
It causes unnecessary pollution. Improve parking space and put up clear signs for the car parks. Any car that drives around looking for parking space produces unnecessary pollution. Make it safe and attractive for people to use bicycles. In the early sixties my parents took their children for a vacation to Torre del Lago Puccini near Viareggio.