How much has yearly gasoline consumption in the United States increased between 1960 and 2006 as a result of greater numbers of obese drivers?
According to a 2006 study conducted by the University of Illinois at Urbana-Champaign and Virginia Commonwealth University, Americans consume 938 million more gallons of fuel annually than they did in 1960, thanks to the extra weight in the driver's seat. According to Sheldon H. Jacobson, one of the professors who conducted the study, the amount of gasoline consumed by obese drivers "will become even more significant as the rate of obesity increases."
SOURCE: Weight Gain Of U.S. Drivers Has Increased Nation's Fuel Consumption | Science Daily