We figured about 83 cents per mile after 8 years with a 30% retained value, all in, with reduced plates, taxes, electric, insurances, etc. By comparison our 350Z costs us about 43 cents per mile after 10 years, and our Lexus RX is at 48 cents after 9 years. These are all-in costs including insurances, gas, maintenance, etc. We are not in this for the money- the 'leading edge" and interest from my tech-centric friends are the payback. Two colleagues are in the process of buying now- a white S85 and a gray S85. WooHoo.