The poor in European capitals don't go around in cars, they use public transportation. Unlike the US, moving around in a car is somewhat of an unneeded luxury, as the city is perfectly livable using subway and buses - and more recently, the myriad of bikes, electric scooters and the like that you can rent with apps and leave wherever.
You want to know how we save the planet? Force people, including the working class, to stop relying on dirty fossil fuels. If there’s no forcing function, nothing will change.