The idea that we're going to somehow replace 300 million gas vehicles in US alone is outright insane. Supply-side lithium/ zinc and power generation is going to see immense strain, and none of these processes are entirely green.

Truth is, our cities are going to have to become far more compact whether we like it or not. While it is true that affluent people throughout the first world are living far closer to work, far poorer ( often welfare dependent) working class citizens living in the suburbs are not going to be driving a "green" suburbia revolution.