This is very good news for air quality in cities. Dirty diesel has for a long while polluted city air, while car makers claimed they where "clean". The only cle

This is very good news for air quality in cities. Dirty diesel has for a long while polluted city air, while car makers claimed they where "clean". The only clean part about diesels where lower co2 emissions, diesels pollute a lot of small particles which are bad for humans to breathe. Modern hybrid cars has as low fuel consumption as diesels but pollutes a lot less particles in cities.