text: To start off, I feel it's safe to say that one of the main reasons of limiting car use is because of air pollution. Everyday more than millions of cars are being used throughout the day. Half of them are ranned by Disel fuel. This can be considered in France cautiosly throughout Paris where they typically have more smog than other European capitals. Diesels make up 67 percent of vehicles in France, compared to a 53.3 percent average of diesel engines in the rest of Western Europe.