London to have world-first hydrogen-powered doubledecker buses
by Gwyn Topham Transport correspondent from Environment | The Guardian on (#4EWEH)
The buses will only have water exhaust emissions and will be on the capital's streets by 2020
London will have the world's first hydrogen-powered doubledecker buses on its streets next year, as the capital steps up attempts to tackle its polluted air.
Transport for London (TfL) has ordered 20 of the buses, which cost around 500,000 each and only emit water as exhaust.
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