Swiss CityCat H2 sweeps streets really clean!
Empa a Swiss  interdisciplinary research and services institution  for material sciences and technology development, home of the Swiss Hydrogen Association "Hydropole", and Paul Scherrer Institut.. More info >>
Switzerland
Empa - the Materials Sciences & Technology Department Environment, Energy and Mobility Laboratory for Hydrogen & Energy in collaboration with the Swiss Hydrogen Association, Hydropole.. More info >>