I believe HSR is well worth doing – in the long run – but it would be the most expensive public-works project since the Interstate Highway System was finished. And right now, America can’t readily afford expensive things.
For the immediate future, if we want an alternative to automobile transportation and air transportation, why not just refurbish and revive America’s old fine-grained conventional-rail transportation system?
I mean, the tracks are already there. We drive over or past them without noticing them every day, but they’re there. They served every major city and many small towns. Most rail lines are long abandoned. (There’s even a “Rails to Trails” movement to turn them into bike paths, on the grounds that they pass through lots of scenic countryside, and bicyclists and railway engineers have very similar ideas about what constitutes a reasonable gradient.) But most of the rights-of-way are still public property or railway property. Many of the tracks are rusted out and might need replacing, but the hard, expensive work of grading the rights-of-way and tunnelling through hills and building bridges over gullies has already been done, done before practically any of us was born. Many of the bridges are so decrepit you wouldn’t even want to try walking across one, but they can be replaced or repaired or reinforced – we do that for highway bridges all the time. If we want them to run on electric power rather than diesel, it should be a simple matter to string catenaries or add power-rails.
Why not?