I read the article. Hydroelectric is not free -- to scale up to powering the automotive industry requires more dams with massive ecological impact -- and you le

I read the article. Hydroelectric is not free -- to scale up to powering the automotive industry requires more dams with massive ecological impact -- and you left out the part out greenhouse gases and the transportation of heavy batteries over hundreds or thousands of miles per recharge. 1K miles could be easily used up on a couple roundtrips. That's not even 2 roundtrips between SF and LA.