regardless of the filling in of the SpC network I don't think that the costs of insuring the car for mexico will vary much.Well, in the end it appears to be the cost of the insurance that scuttles the idea (at least for now.) Insuring the car for two weeks in Mexico appears to cost about half as much as a whole year's insurance at home. That will easily cover a rental car, gas, and part of the plane tickets. Sigh. Maybe I will revisit the idea in a few years after the super charger network has built out a bit more south of the border.