[wjnqx]

I don't think the cost of that is justified in large cities. LA already dedicates more land area to automobile infrastructure than anything else, and the region is still plagued by traffic jams. At the end of the day, a single rail line can bring an amount of people in and out a city equivalent to multiple lanes of traffic. That's a lesson Americans forgot after 1945 for whatever reason, and now we have to re-learn it from the rest of the world now that we've hit the limits of car-oriented development.