Sorry, I meant to say YES first. Something many people overlook is the electricity source for battery recharge for electric cars. We might be able to charge the batteries at night during low load periods. Tesla claims a 3.5 hour recharge time so staggering current grid load would possible. Thus, reducing the overall need for new power plants. But all that energy formally made by gasoline has to come from somewhere and I bet new power plants will be the source.
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