First of all, Teslas are far more popular in states that are more "green" to begin with, such as California. So Nathan Weiss's use of the average USA power plant mix already rigs the game against Tesla. Second, Nathan Weiss penalizes Tesla for the lithium battery production, but ignores the carbon footprint of gasoline production, focusing only on tailpipe emissions from gasoline powered cars. If the Tesla is penalized for power plant emissions, why aren't gasoline powered cars penalized for the emissions resulting from gasoline production? Finally, the grid is becoming "greener" every day, with massive amounts of wind power coming online. California added 4,000 MW of solar power in the last 18 months.