There's a big difference between "currently known lithium reserves" and "worldwide lithium reserves". There's not much incentive to find additional reserves whe

There's a big difference between "currently known lithium reserves" and "worldwide lithium reserves". There's not much incentive to find additional reserves when you can essentially just pick it up off the ground in Bolivia, but if prices start to go up you can bet people will find other ways to get it. If all else fails, you can extract an essentially limitless amount from seawater, but that would be much more difficult and expensive that current methods, so nobody's bothering to find out how to do it cheaply at scale (yet?). In any case, elemental lithium is a very small part of the cost of a lithium-ion cell, so this shouldn't impact the EV market much. And you can already recycle the lithium from batteries, so once you have enough to support the world's transport needs, you're pretty much set.