Gasoline use is rising almost 5 percent above the five-year average. [...] Many Americans have no choice but to drive more, says Christopher Knittel, an economist who studies fuel consumption at the University of California in Davis.
Gasoline use is rising almost 5 percent above the five-year average. [...] Many Americans have no choice but to drive more, says Christopher Knittel, an economist who studies fuel consumption at the University of California in Davis.
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