Currently it seems that all passenger services end at the last station on the route, sometimes its the last realistic station or others (as with a number of Acela services) its simply the last station on the map. Personally in terms of realism and game Id rather see services extend to the finish at a red at the end of map. On routes such as DRA we'd have longer runs for some of the IC ICE services if they where extended to finish at the end of the line rather than just Dresden to Dresden Neustadt. We wouldnt have every Acela stopping at Trenton in New York Trenton. Routes like SPG could actually have passenger service as well. But what do you think?