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So 1000 miles doesn't seem like a lot. That's like one roadtrip and your annual allowance is gone. I wonder what the small fee will be after that.

Also, I wonder how they will be tracking usage? In the car or the supercharger network? I would assume the supercharger network, but does that mean that when you plug in, your car sends a unique identifier? I'm curious how that all works.

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Yes the car already performs a handshake with the supercharger and verifies the car's eligibility. At some earlier point they sold lower-end Model S's that did not come with Supercharger access. Presumably they can lock out stolen cars, etc.

They did say on average it would be less than a comparable gas fill up, so not exact but an indication it would be a fair price.

True, but if the cost of gas jumps back to >$4 where it was 2 years ago, will the cost of a supercharge go up as well?

If that SC unit is powered by a natural gas power plant, I would assume so.

In the Charging Estimator section on their website, they think that a Model competitor gets 21 mpg (https://www.tesla.com/models) and gas is $2.70/gallon, so I would expect it to be based on that.

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