I live in a big city. I drive but I grew up in a much smaller city and my job is about an hour away. (I do sometimes take the train because traffic sucks) I take public transportation anytime I am going downtown. I meet many people who have never driven a day in their life and don't plan to. San Myshuno is meant to be a modern, 21st century city and I think it fits the bill. Many developers are focusing on mixed use building and there are bicycle lanes on every street. Most large companies offer discounts on public transportation. Look at lyft and uber, lots of people use them one way because they took the bus or walked the other. I would love cars in this game but I don't think I pack about city living was the place to implement them.