The impact of bad commutes is a measurable drain on personal savings and national productivity. According to the Urban Mobility Report published last year by the institute, a survey that tracked traffic patterns in 439 U.S. urban areas, the overall cost of commuting (based on wasted fuel and lost productivity) reached $87.2 billion in 2007 -- more than $750 for every U.S. traveler. The total amount of wasted fuel topped 2.8 billion gallons, or three weeks' worth of gas for every traveler. The amount of wasted time, 4.2 billion hours, represents roughly one full workweek (or vacation week) for every traveler. Bundle determined that the worst commute in the country, in terms of cost and wasted productivity, belongs to Dallas. Other cities that struggle the most with commuter aggravation and cost are San Jose, Calif.; Houston; Miami; Phoenix; Los Angeles; Bridgeport, Conn.; Riverside, Calif.; Austin, Texas; Orlando, Fla.; and Nashville, Tenn. Dallas had the unfortunate distinction of having one of the nation's longest average commutes (with a combined 52,077 miles a year travelled by its rush hour commuters), as well as costly auto expenses ($400) and a high rate of hours delayed (53).