Chemical substances released by car tyres can be found in leafy vegetables eaten by humans, according to new research shedding light an environmental impact of both electric and combustion-engined vehicles. Car tyres consist of a complex mixture of materials to improve their performance and durability. This also includes chemical additives, which comprise hundreds of substances. Once released from the tyres, these particles are being washed into sewage treatment plants when it rains, say environmental scientists at the University of Vienna, and the sewage that accumulates there is often spread…