17 January 2019, Hamburg: Peter Tschentscher (SPD, M), First Mayor of Hamburg, and Toralf Mьller (to the right of Tschentscher), Managing Director of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH), are joined by trainees and employees for a group photo at the inauguration of a new VHH electric bus workshop. Photo: Christian Charisius/dpa

17 January 2019, Hamburg: Peter Tschentscher (SPD), First Mayor of Hamburg, and Thomas Dreher (r), Workshop Manager at Verkehrsbetriebe Hamburg-Holstein GmbH (VHH), talk during a tour after the inauguration of a new VHH electric bus workshop. In the background is an electric articulated bus Sileo S18. Photo: Christian Charisius/dpa

17 January 2019, Hamburg: Peter Tschentscher (SPD), First Mayor of Hamburg, speaks at the inauguration of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). In the background is an electric articulated bus Sileo S18. Photo: Christian Charisius/dpa

17 January 2019, Hamburg: The cockpit of a Sileo S18 electric articulated bus can be seen at the inauguration of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). Photo: Christian Charisius/dpa

17 January 2019, Hamburg: Exterior view of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). Photo: Christian Charisius/dpa

17 January 2019, Hamburg: A Sileo S18 electric articulated bus is standing in the hall at the inauguration of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). Photo: Christian Charisius/dpa

17 January 2019, Hamburg: The cockpit of a Sileo S18 electric articulated bus can be seen at the inauguration of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). Photo: Christian Charisius/dpa

17 January 2019, Hamburg: Peter Tschentscher (SPD), First Mayor of Hamburg, and Toralf Mьller (l), Managing Director of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH), talk to trainees on a tour after the inauguration of a new VHH electric bus workshop. Photo: Christian Charisius/dpa

17 January 2019, Hamburg: A Sileo S18 electric articulated bus is standing in the hall at the inauguration of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). Photo: Christian Charisius/dpa

17 January 2019, Hamburg: The cockpit of a Sileo S18 electric articulated bus can be seen at the inauguration of a new electric bus workshop of Verkehrsbetriebe Hamburg-Holstein GmbH (VHH). Photo: Christian Charisius/dpa