America can thank its well-maintained highways for a thriving car culture, but those Sunday morning drives have an environmental impact. The average American household has two cars, according to Statistica, and the average car emits six tons of carbon dioxide every year. The amount of pollution a single car creates depends on how efficiently it runs, that is, how many miles per gallon it gets. If you want an approximate estimate of how much carbon dioxide your own car produces, keep in mind that burning through one gallon of gas will create 20 pounds of carbon dioxide.
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