) Euro Ticket, SInn und Unsinn
https://www.focus.de/reisen/bahn/pro-und-contra-streitthema-9-euro-ticket_id_107933142.html
https://www.bvg.de/de/tickets-und-tarife/9-euro-ticket?utm_source=google&utm_medium=cpc&utm_campaign=bvg_s-be/br-de_(9_euro_gen)&utm_content=9_euro_gen&campaignid=17220404851&adgroupid=135313785806&adid=597208128669&gclid=EAIaIQobChMIyNfI8rri-AIVIo9oCR0JkApMEAAYASAAEgIkKfD_BwE