No, not completely offset- partially. I don't mean I expect it will cost an electric car just as much to drive as a gas car; I mean that the falling costs of electricity storage cannot be taken in isolation against the rising cost of gasoline. Let's not forget as well that if everyone is suddenly driving electric cars, electricity demand will explode and prices will rise. I expect the result is simply that it will draw out the "crossing point".
Really, that's all I'm arguing, is that we are not twenty-four months away from the electric car takeover. It's probably more than a decade out.