One key finding was that almost 1 billion gallons of gasoline per year can be attributed to passenger weight gain in non-commercial vehicles between 1960 and 2002--this translates to .7 percent of the total fuel used by passenger vehicles annually. Researchers also estimated that over 39 million gallons of fuel is used annually for every pound gained in average passenger weight. It is noted that while this is relatively small considering other factors such as more people on the roads, it is still a large amount of fuel that will continue to grow as the obesity rate increases.
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