After using up the yearly allowance of 400kWh on the supercharger network, I'm wondering which of the following routes Tesla will take: 1. Charge for the cost of electricity and not take a profit, thereby using extremely cheap "fill-ups" as yet another good marketing device to sell the car. 2. Charge more than the cost of electricity and use the profits to build and develop the supercharging network. In thinking about option 1, using the average price of $.02/kWh, even a full charge on a P100D would only cost $12. That's pretty amazing compared to the price of gas. On the other hand, even charging $.20/kWh would still be cheaper than gas and might provide them with enough profit to expand the network. Elon has said that Tesla is not in the service business to make a profit, and I wonder if that ethos will apply to the supercharging network. Thoughts? Go!