A busy UK motorway is soon to cater for green motorists, ministers have announced.
Drivers of electric and hydrogen-powered vehicles will be able to refuel and recharge their low carbon vehicles on the M4, which spans from south Wales to London, they said.
The Government made the announcement as part of proposals to boost the renewable energy sector.
The "hydrogen highway" aims to promote electric, hydrogen, compressed natural gas and bio-methane as an alternative fuel to petrol and diesel.
Ministers confirmed that south Wales will become the latest Low Carbon Economic Area, with the M4 offering the biggest low carbon refuelling infrastructure in the UK.
There are also plans to include other regions, with similar filling points proposed for Swindon, London and the Midlands.
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