Since a lot of people seem to be jumping to extreme conclusions about this based on specious assumptions, here’s how the process works according to the article:
Magrathea — named after a planet in the hit novel The Hitchhiker’s Guide to the Galaxy — buys waste brines, often from desalination plants, and allows the water to evaporate, leaving behind magnesium chloride salts. Next, it passes an electrical current through the salts to separate them from the molten magnesium, which is then cast into ingots or machine components.
Right? I want a PHEV so range isn’t something I really need to think about.