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Wall Street Journal Op-Ed Needs a Better Accountant

A Wall Street Journal Op-Ed by Bjorn Lomborg, “Green Cars Have a Dirty Little Secret,” argues that even though driving on electricity emits half as much pollution as driving on gasoline, it never makes up for the additional energy it takes to build electric cars. How does Lomborg do the math? First, he picks an estimate for electric car manufacturing emissions that’s three times higher than conventional estimates. Second, he imagines electric cars will be prematurely sent to the junkyard, well before they’re even out of warranty. Everyone likes exposing a fake, but if there’s a hoax here, it’s not the electric car.

Lomborg’s argument rests on the reasoning included in this sentence: “If a typical electric car is driven 50,000 miles over its lifetime, the huge initial emissions from its manufacture means the car will actually have put more carbon-dioxide in the atmosphere than a similar-size gasoline-powered car driven the same number of miles.”

The premise that the typical electric car will only be driven 50,000 miles is fanciful. Both the Chevy Volt and Nissan Leaf electric powertrains are backed by 100,000-mile warranties and there’s little reason to believe they won’t be driven much further. In fact, many drivers of the electric RAV4 Toyota produced in limited numbers between 1997 and 2003 have logged well over 100,000 miles. Below is a photo taken by one such proud owner when his odometer hit six figures in 2009. Today’s much more capable and advanced electric cars will go at least as far.
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