After some sleep, I figure with $.10 electric, $3 gas, 20 mpg old van, 30 mpg new van, it's easiest to figure $.15 per mile old, $.10 per mile new gas, and $.05 per mile new electric. So saves $.10 per mile to drive EV and $.05 per mile to drive gas. The van keeps track of the total EV and gas miles separate so it will be easy to figure later. Until gas goes up again...
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