I have been noticing, most new passenger trains are not being the traditional ones! I mean since the origin of the passenger trains, were a locomotive + passenger wagons. But clearly since some years now, most new ones are EMUs or DMUs. For example all ICE, and new Regio ones now are of that types. Same for new trains in UK, or other European or other regions - Japan / Korea - countries. Of course in USA, this trend is not happening so much, as mostly are still the classic locomotive + passenger cars. What do you think about it?