That doesn't add up to something more expensive than a car? I was in ny recently, and a train ticket on the LIRR cost ~20 round trip. That's $600/month. But, it's better overall because of the traffic to and in the city.

It really depends on a whole host of factors both related to the economics and the convenience. There are a few cities that tend to be particularly car unfriendly. Many where cars are essentially a requirement. And some that can go either way depending upon your lifestyle, where you work, and a variety of individual preferences.

But figure that a car is going to cost some X thousands of dollars a year plus whatever it costs you to park it. (The government rate is $0.57 or so per mile though that may not be that directly applicable to car vs. other transportation analysis.)