text: In the United States, the Envirornmental Protection Agency is promoting "car reduced" communities and legislatores are starting to act, if cautiously. Congestion was down 60% in the capital of France, after 5 days of intensifying smog... Diesel fuel was blamed, since France has a tax policy that favors diesel over gasoline. Diesels make up 67% of vehicles in France, compared to a 53.3% average of diesel engines in the rest of Westen Europe. Recent studies suggest that Americans are buying fewer licenses as each year goes by. When adjusted for population growth, the number of miles driven in the United States peaked in 2005 and dropped steadily thereafter, according to an analysis by Doug Short of Advisor Perspectives. As of April 2013, the number of miles driven per person was nearly 9 percent below the peak and equal to where the country was in January 1995.