IIRC the very first MSTS in 2001 had the NEC from Washington to Philadelphia(?) with an Acela and AEM-7.
I've mentioned elsewhere that intermediate driving cabs appear on the class 166. In addition:
rolling stock loses its numbers (they appear as...
I find this happens on Class 43 and 166 as well, but only when the game has been saved and then resumed later.
Some 166 consists have a driver's cab on the intermediate carriage. I've only noticed this after restarting a saved game.
Separate names with a comma.