replacements over ten years means replacing cars at end of life. Additionally, 90% of a car's total life cycle CO2 emissions are due to fuel use[1], so its act

replacements over ten years means replacing cars at end of life. Additionally, 90% of a car's total life cycle CO2 emissions are due to fuel use[1], so its actually very quickly worth replacing a car. With the current grid it's between 30-60k miles, with a fully green grid it's as low as 7k miles. [1]: http://www.ucsusa.org/clean-vehicles/electric-vehicles/life-cycle-ev-emissions http://www.ucsusa.org/clean-vehicles/electric-vehicles/life-...