In the US, The only cities with good public transport are in the east, like New York or D.C. Many others, like Chicago, have either pubic transport that defeats the idea of public transport, or just terrible public transport that you only use if you are extremely poor. And then, cities in the west, like LA, and suburbs around the country have basically non-existent public transport. (You may have noticed that they are famous for traffic). In most American cities and suburbs, you need a car just to survive