For at least the next decade, the overall fuel economy of the entire car and light truck fleet will be more crucial for climate protection than the number of electric vehicles sold. That's the message of my recent online article in Scientific American: "Want Greener Cars? Focus on Fuel Efficiency." Read the discussion there (the article was first published in The Conversation under the title "To make the US auto fleet greener, increasing fuel efficiency matters more than selling electric vehicles").
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