By The Economist
Compared with other modes of transport, train technology might seem to be progressing as slowly as a suburban commuter service rattling its way from one station to another. Automotive technology, by contrast, changes constantly: in the past decade satellite-navigation systems, hybrid power trains, proximity sensors and other innovations have proliferated. Each time you buy a new car, you will notice a host of new features. Progress is apparent in aircraft, too, with advances in in-flight entertainment and communication, fancy seats that turn into beds, and quieter and more efficient engines. Trains, meanwhile, appear to have changed a lot less.