The major problem is still access. I live in one of the many large areas of my state where most people commute to the big city, but the only practical way to get there is to drive. There is no subway service and the nearest commuter trains are about a half hour away. Most people would rather drive an hour and a half each way than drive a half hour and then hope there is still any parking left to pay for at the closest train station, wait for a train, and then take that in, and do the reverse home. Trains can be late and sometimes they're overfull and you have to wait a long time for the next one. You don't really save any time taking the train, and it is often longer. The only advantage is being able to sit and read instead of driving, but that assumes the seats aren't already full. Having a slightly shorter commute and knowing you can leave when you want to instead of having to hope the train schedule works out for you is also a big advantage of driving. To make mass transit a more realistic option for more people, we need a much bigger investment in rail service. More lines extending to more parts of the state with more regular and reliable service. Without that, people are still going to drive.