The U.S. already has high-speed trains: the Acela Express has been carrying millions of riders between Washington, D.C., New York and Boston since 2000. It zips along at 150 miles per hour for relatively short distances—just over 25 miles per hour faster than conventional counterparts.
But compare it with high-speed trains in Europe and Asia that can reach speeds over 200 miles per hour on hundreds of miles of track. The problem is: tracks in the U.S. are not designed to support high-speed travel. Plus, any new express trains might have to share those lines with slower freight traffic.
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