New data from federal scientists suggests there may be way more lithium underneath the Salton Sea in Southern California than previously thought.The report from researchers at the Lawrence Berkeley National Laboratory finds there could be up to 18 million metric tons of lithium there. That would be enough to power more than 380 million batteries for electric vehicles.How big of a deal could the Salton Sea turn out to be in terms of its lithium supplies, and what that could mean for EVs and EV batteries?