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