Last year, the United Kingdom announced plans to ban the sales of petrol and diesel powered vehicles by 2040, but there is now a push to accelerate the initiative. According to Reuters, London mayor Sadiq Khan and other city leaders want the government to implement the ban by 2030 instead.

“Banning the sale of new petrol and diesel vehicles by 2030, providing support to deliver Clean Air Zones in cities and introducing a national vehicle renewal scheme will dramatically improve our air quality and our health,” said Khan.

For now, exact details about the ban have yet to be revealed, but the government is expected to provide more information about its “Road to Zero” plan soon. This includes the extent of the ban and whether it involves hybrid vehicles, which have both an electric and combustion engine.

Britain is one of many countries that are in support of such a move, with many others already pledging to stop selling fossil fuel powered vehicles, particularly diesel ones. Some automakers have even dropped or stopped development of diesel engines in response.