This Freakonomics article has an interesting take on trains vs. cars.

Not long after the Van Wyck Expressway opened in 1950, when air travel was much less widespread than today, the airport traffic alone exceeded 10,000 vehicles per hour– the official peak capacity of the whole highway. Anyone who lives in New York City will confirm that the situation has only gotten worse in the intervening decades. An original train line would have made the journey faster and more pleasant for so many New York residents and visitors.

Usually I come down on the “trains are dumb” side of this, but clearly, where there is already adequate traffic that justifies its construction and the expectation of economic sustainability is in place, a train is a vastly superior form of transportation.

Something about the marginal cost of public transportation, how to get to, where to leave your car, etc.

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