text: Due to this ban and fine on automobiles, almost 4,000 people had their cars impounded due to their reactions to getting a fine. Granted in the same token street congestion was down nearly 60% in France's capital. France, and Paris officials blammed diesel vehicals for their abundance of smog, although there is a tax that favors diesal gas instead of regular gasoline. So in turn to this gas tax, diesal made up 67% of all vehicals in France.