Rare metals becoming rarer. Treading lightly, my foot.
"Jack Lifton, an independent commodities consultant and strategic metals expert, calls the Prius "the biggest user of rare earths of any object in the world."
Each electric Prius motor requires 1 kilogram (2.2 lb) of neodymium, and each battery uses 10 to 15 kg (22-33 lb) of lanthanum. That number will nearly double under Toyota's plans to boost the car's fuel economy, he said."
Hey, does that mean Piouses aren't organic?