i would never believe anything jeep says...a BEV running off of a grid that's 50% NGCC power plants is cleaner than the comparable gas car.
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How Clean is Your Electric Vehicle?
On average, electric vehicles (EVs) produce less carbon pollution than comparable gasoline-fueled cars. Just how much less depends on where they’re charged.evtool.ucsusa.org
the astute reader will note that the Wrangler gas version does not get anywhere near 28 mpg combined. QED