by way Running the Numbers on High-Speed Trains part 2 Part 2 productivity http://economix.blogs.nytimes.com/20...-speed-trains/ $50 million a mile the math just doesn’t work Dallas and Houston user benefits productivity productivity user benefits runs the numbers direct productivity a possible Dallas-Houston posted estimated cost part 2 user benefits Glaeser analyzes the Houston-Dallas route user benefits productivity productivity productivity user benefits productivity runs the numbers part 2 productivity by more than $500 million Running the Numbers on High-Speed Trains user benefits part 2 estimated user benefits Running the Numbers on HSR economic user benefits The New York Times user benefits Glaeser analyzes the Houston-Dallas route user benefits Glaeser analyzes the Houston-Dallas route productivity in the original article productivity Running the Numbers on High-Speed Trains Ed Glaeser Part two a subsequent column off the charts Running the Numbers on HSR Glaeser analyzes the Houston-Dallas route user benefits user benefits the math just doesn’t work productivity productivity