If this commercial is any indication, the answer is really freaking stupid.
My first reaction on seeing this was to think, “Wow, clever ad to get people to think about how much electricity they consume!’ Because, of course, almost all the electricity consumed in the United States is produced by burning something. True, gasoline is just a small part of the total but – Hey! – coal is the devil, right?
Electric vehicles produce no emissions at the point of use but that doesn’t mean there are no emissions associated with their use which is the clear implication of this commercial. And, judging from the people I know who are anxiously awaiting their opportunity to own an electric vehicle, it’s a marketing ploy that resonates.