Hey all, I wanted to share a screen shot of a spreadsheet I built to track the true cost of my Model S. My goal was to quantify the statement "electric cars are cheaper to run, thus you can afford to pay more for one than a comparable gas car". At the time I bought the car, given how much I drove, how often I crossed the bay bridge (which at the time offered a $3.5 rush hour discount for EV drivers, now it's $4), and assuming a 25MPG for the comparable gas car I would have driven, I estimated I'd save $194 a month. It's turned out to be $218 so far. As you can see, I update the current gas price each month, along with my mileage. The amount I spend on electricity also varies a bunch, as I have free supercharging so very often I pay zero when I can make it to local superchargers. Lastly, I track the average true monthly cost since I owned the car, the monthly depreciation (I use KBB to estimate), and the average monthly pure $ cost, not including savings related to EV driving. The goal here is to keep the car long enough so that this number (the average monthly true cost) looks reasonable. Currently it's about $1200 a month. I'm hoping to keep the car 15 years, by then this number will be much much lower. I purchased the car in June of 2017 and have saved nearly $6500 so far.