The one really unique train that all german lines need is a DMU, moreso that DB BR 642 DMU. Which is literary on most german lines. It's gotta make a return in TSW2, you gotta have that Diesel Multiple Unit as well roaming.It can be found darting around the smaller communities surrounding cities such as Augsburg, Dresden and Leipzig but I am pretty sure you can drop it off in any of the german routes as long as we have a tutorial, scenarios and time table