Self propelled dual power (electric/diesel-electric) EHFZ (Erhaltungsfahrzeug/maintenance vehicle) for the Gotthard Base Tunnel, Xem 9181 # 011, together with Re 4/4 II # 11144, is leaving Biel RB (shunting yard) to Solothurn on a test run. 13 of this yellow Xem vehicles for the mainteanance of the Gotthard and Ceneri Base Tunnels will be delivered by Harsco Rail (a US company) from Aachen/Germany. They are 22 meter long, 1100 kW when powered from the overhead wire, 550 kW with diesel, reach 100 km/h and have automatic couplers. Up to 8 of this vehicles can, together with several maintenance cars in between, form a train to go into the Gotthard Base Tunnel. The delivery of this Xem 9181 are about one year behind schedule.