Flixbus now offers you the Flixtrain. Long-distance train connections within Germany to an affordable price. The routes are from Hamburg via Essen and Düsseldorf to Cologne (Köln) – starting on 24 March 2018. And from Stuttgart via Frankfurt and Hannover to Berlin – starting mid of April 2018.
For the opening, Flixtrans promotes its trains – and you can save your money. Train tickets starting from Euro 9,99. To find these saver prices and the schedules for the Flixtrains, please have a look at Flixbus
I will extend this topic with schedules and photos, as soon as I travelled myself on a Flixtrain. 🙂