I've never seen the figures work out so close. My new place has really high electric rates and there's no plan options, just the tier one, no time of day or electric car special or anything. I have electric heat and 12' tall ceilings. My wife or I work from home 3 days a week. We readily trip into tier 2 pricing which is $0.27748. Since we hit that as it is any BEV will start there best case. Worst case it clicks us into tier 3 so $.40337. But using the .27 figure and BEV of decent range with a 50kwh battery that's $13.48 a fill up good months and $20 a bad month. Now a model 3 range is slated at 220 miles. I don't believe it, because I've never gotten anything close to real world stated miles. Im an admitted hot mess of mileage. Drive 80, windows down, sunroof open (well not past 60), heat or AC on, roof racks with various toys. At that I get about 280 miles on my gasser. In theory I should get 450 miles. My fill price is about $40. So $0.14 a mile real world. Let's apply the same range degredation ratio to the 3. That's a 135 mile range which I'd believe. So it's about exactly $0.10 a mile. If it's one of those bad months it's the exact same as my gas at $.14. And that's using my gasser, which is way bigger than the 3. If I took my wife's smaller car it'd be better.