![]() ![]() According to the EPA, the average car emits about 5.1 metric tons of CO 2 per year. How green, exactly, are side skirts and tail fairings? Crystal Arvigo told me that tail fairings on a long-haul trailer that does 60,000 miles per year can save 480 gallons of diesel fuel, which equates to 10,752 lbs, or 4.9 metric tons, of CO 2 that is not emitted.
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