*Neodymium-iron-boron magnet thermal failure in electric vehicles* (matched from canon)

Even if you're interested in something like dysprosium — why should you be interested in dysprosium? Mischmetals are good for sparks because if you do mechanical friction you get a very rapid spark; they like to burn in air. But dysprosium in particular — anybody heard of neodymium-iron-boron magnets? The problem with neodymium-iron-boron magnets is they're very strong, but their Curie temperature is like 140 degrees Fahrenheit. For example, I bought two all-electric vehicles in June. Now I'm gas-free — not completely; my wife has one of the two and I have the other, but we have a third car that's gas in case we want to go on a long trip, because these things only have a 200 to 240 mile range. They have dysprosium magnets in the motor, because dysprosium-iron-boron will go to 180 or 190 degrees Fahrenheit. Some of these motors, if you push them real hard in the mountains, can get above 140, and all of a sudden your motor won't work. So dysprosium-iron-boron is sort of replacing the neodymium [neodymium-iron-boron] where you need higher temperature. If someone was interested in dysprosium as an element, you could write a whole 10-page paper on it. You could actually write a whole book on most of these things.