This vehicles do not will be in USA DLC, because not in list (http://www.train-fever.com/media/usa-dlc/), but I think it will be interesting for players. 🙂
Now we have two vehicles, but later we’ll have more, I think.
So, at first – Amtrak Amfleet waggons, available from 1975 (Amfleet I) and from 1981 (Amfleet II).
http://transport-games.ru/index.php/files/file/540-amfleet/
And at second – classic bus by General Motors: TDH-3610. Available from 1944 to 1970.
http://transport-games.ru/index.php/files/file/572-gm-old-look-td-3610/