I ran some calculations that really surprised me. I recently bought a Honda Clarity. It's rated to get 47 miles on a charge, which is roughly 19kwhr , accounting for charging efficiency. It also claims to get 42mpg with a completely drained battery in "HV" mode. Electricity rates in San Diego average 23cents/kWh . To make it simple, if I charge the battery 89% or 17kwhr, it will travel the same distance that a gallon of gas would, 42 miles. So at 23 cents, that's $3.91 using electricity. Gas here is $3.85. So I'm calculating that's it's actually CHEAPER to fill the tank than plug in. Yes, the utility does have some complicated off-peak discounts for ev owners and many people have free charging at work, like me, but this stat still completely amazed me. At the common average rate for power in SD, it's cheaper to run the car on gas- even though we pay $3.85 / gallon out here !!!! Amazing, no??