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Is driving slower also driving greener?
I was going 55 mph on a 2.5 hour trip yesterday and while doing that I was wondering if someone that did the trip doing 55 mph (and thus saving gas) compared to someone doing that same trip doing 65 mph would drive 'greener' or less green when it comes to total emissions for the whole trip.
Going slower sounds greener, but maybe the engine burns more efficiently at higher speeds and thus the total of emissions for the whole trip would be less?In other words, do saving gas and saving the environemnt go hand in hand or not?
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