@luna so like, Bipa is an outdated polish nomenclature for Doppelstockzug(or Doppelstockgliederzug? no fucking idea), and Gagar is the ST44 loco, pic attached
@luna we also still have a bit of Doppelstockeinzelwagen running but its rare, though you can see one kind of often running on Wrocław-Poznań regio trains, i have seen one running last Friday