The confusion is due to selective quoting of the article's source: http://www.greencarcongress.com/2008/07/us-vehicle-mile.html http://www.greencarcongress.com

The confusion is due to selective quoting of the article's source: http://www.greencarcongress.com/2008/07/us-vehicle-mile.html http://www.greencarcongress.com/2008/07/us-vehicle-mile.html ...which says that not only are we seeing a drop compared to last year, but we are also seeing month-by-month drops, which is unusual because May has historically been an "up" month.