Steam railcar CZm 1/2 # 31 of SBB Historic, maintained and operated by steam group Zürich (VDZ) in the Bahnpark Brugg AG on the open doors days 2025. This vehicle was built in 1902 by Maschinenfabrik Esslingen/Germany for the SBB. Between 1907 and 1948 used, after several improvments, on the Uerikon-Bauma Bahn. Since 2005 operated and maintained by VDZ (association steam group) Zürich and based in the depot F in Zürich.