Meath Chronicle: The Opel-General Motors HydroGen4’s fuel cell stack uses 440 single cells which combine hydrogen and oxygen from the air to produce electricity, with water vapour as the only by-product, and therefore zero emissions. The Irish Government’s recently announced target of having 10 per cent of all registered vehicles running on electric power by 2020 seems a little far-fetched. This means converting more than 250,000+ vehicles from being run on petrol or diesel currently to being …