Times are good for American railways

https://www.economist.com/node/21806404?fsrc=rss%7Cbus
FEW INDUSTRIES are more vulnerable to events that depress revenues and increase expenses than America’s railways. The basic business model is to lug lots of stuff to offset the high fixed costs of owning fleets of locomotives and maintaining thousands of miles of track. That has been hard as America’s supply chain has come unglued…