Most cities in North America built in the XX century were deliberately built with the car in mind. The suburb doesn't make sense without cars, unless of course

Most cities in North America built in the XX century were deliberately built with the car in mind. The suburb doesn't make sense without cars, unless of course you have a very good local train network (which in the USA is almost close to impossible to find nowadays). You can see the opposite issue in Europe, too: very old cities are a nightmare to travel in a car, my city has existed for >2000 years and because of that the city centre has a lot of roads that only make sense if you expect most people to walk or at most ride a horse