text: , less smog interrupting the oxygen is another benefit to limiting car usage. To explain my reasoning, Paris has banned the privelage of driving due to smog. Paris typically has more smog than other European capitals. Diesel fuel was blamed, since France has a tax policy that favors diesel over gasoline. Diesel make up 67 percent of vehicles in France, compared to a 53.3 percent average of diesel  engines in the rest of western europe, according to Retuters.