(Pacific time zone waking up....) Either you forgot the cost of externalities from the nonrenewable power generation that is likely supplying your electricit

(Pacific time zone waking up....) Either you forgot the cost of externalities from the nonrenewable power generation that is likely supplying your electricity today, or you believe it's zero. Tesla's mission isn't to make cheaper roofs; it's to accelerate the transition to sustainable energy. If you place any value on that mission, then you should be able to quantify it here.