Now that we have n-Wagen, the 110 and the Kako-cabcar ingame, another very matching verhicle is the Wittenberger cabcar: It is also used by National Express in their Tri-replacement train on the RB 48: (NX WiKo on RB 48) Implementation ingame: 1) As Loco DLC: As a loco DLC, the cabcar should come with the already ingame 2nd class n-Wagen and obligatory a new loco like the BR 141. Also modern locos like the 2nd gen of Taurus locos (the ÖBB 1114 would be the equivalent) or a Vectron are possible. Combined 1st and 2nd class coach (ABn) would be a nice-to-have addition. (BR 111 pulling some n-Wagen) 2) As part of a new route: In this case I suggest this train with a BR 111 for a route along the rhine, especially between Koblenz and Mainz. I don't know for sure if there was a time this exact train drove on that route, but it would look awesome for sure! Or it could simulate a replacement or museum train. Additional information - this is the german Wikipedia-Article translated in google-translator-english: "The driver's cab is spacious and uncluttered, with side doors and a glazed rear wall with either a revolving or sliding door that allows a forward view of the track from the passenger compartment. On the technical side, a computer-aided control was installed, which enables operation with both the conventional push-pull train control and the new time-division multiplex push-pull train control, both with diesel and electric locomotives. The operating mode is simply switched, no more conversions are required. It can be used with side-selective door control, which is why the cars were often seen at the front of a double-deck push-pull train. The control head was manufactured in large numbers due to its good service; numerous old control cars were equipped with it (types 738, 739 and 742) and (only occasionally) without a transition option (types 735 and 740) as well as normal n-type cars without a driver's cab (types 719 and 725) to increase the proportion of push-pull trains. Some of the cars that had already been modernized were also used, otherwise the passenger compartment was also redesigned during the conversion. The cars are referred to as "Wittenberger Kopf" or "Wittenberge control car" or "Wittenberger control car"; the control cars manufactured or converted by AW Karlsruhe from 1971 onwards have since been called "Karlsruher Kopf" or "Karlsruher Steuerwagen" to distinguish them. Numerous Halberstadt center entry cars were also converted to Wittenberge control cars using the same scheme, but these can only be operated in ZWS mode. Again, there were several variants. Mostly you will find the design variants OFV and DBM. Some of the rotary folding doors were replaced by pivoting sliding doors. Some cars have been made wheelchair-accessible with a lift and wheelchair toilet. Confectionery and drink vending machines were installed in some cars. Numerous cars have received additional high-beam headlights."
Bring it on and when it comes to the other locomotive that can run the Wittenberger Cab car the DB BR111 it's compatible with both N-wagen and Dostos. Here's a video from 2020-2021 on RRO Wuppertal Hbf The setup is that DB BR111 with Dostos DB BR111 pointed towards Aachen Hbf 766.2/767.2 Hagen Hbf DB BR111/DB BR110.3 N-wagen DB BR111 faces towards either Koln Hbf or Wuppertal Oberbarmen
