European cities are well aware that transport is a leading emitter of GHGs (Greenhouse Gas, a 33% share in 2019, according to the IEA , International Energy Agency), so decarbonisation of public transport systems is a key component of net-zero carbon strategies.

A new report by Gothenburg, Sweden-headquartered carmaker Volvo shows that electric vehicles must still overcome big environmental challenges, even as they reduce greenhouse gas emissions .