None of that actually matters. The point is the market will fix it. Not enough lithium? Then price will go up and we'll mine more (remember when people thought

None of that actually matters. The point is the market will fix it. Not enough lithium? Then price will go up and we'll mine more (remember when people thought we'd run out of gas by 1980?). And as the price and demand goes up alternative battery designs will become increasingly created (I must have read several dozen articles about new battery types being researched). In a single hour, the amount of power from the sun that strikes the Earth is more than the entire world consumes in an year. The physics are there, if cars go electric and it drives the price of electricity up, it makes it much more cost-effective to build new solar panels (because the profit you make on them is high). Basically this is the magic of supply and demand -- when there isn't a monopoly it practically forces society toward a direction good for all. If we taxed externalities we'd already be heading there.