In today’s Wall Street Journal, Jeb Bush writes that “America could be on the threshold of its greatest century.” Why? Well, here’s one reason he gives: “Technological innovation means that in the coming decades, driverless vehicles will flawlessly move people on highways, never getting lost, never having accidents.”

Alas, we already have a transportation system that moves people from place to place without their having to chart their own course, drive, or even experience the joys of occasionally getting lost. It’s called the train — and we already have one political party that’s sufficiently enamored with it.

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