News: LYC Rising demand for responsible rare earths is not lifting prices, says Lynas, page-33

I have shown the math many times before if you add up the atomic weights of Nd₂Fe₁₄B you will find that by weight Nd is 27% of a perm magnet. 1.6 tons of Nd will produce 6.17 tons of perm magnets. Go to a periodic table and double check me if you want.

" 1.6M tones of NdPr Oxide as this converts to around 3.2M tones of magnet." Your number is just wrong by a lot.

- OEM will turn to Ferrite magnets. Just think for a moment what did first tesla use? AC synchronous Moters. the first tesla to use perm magnet motors was the 3. Ferrets are very week and heavy. Electro magnets are cheaper more efficient and lighter than Ferrite. advances in Perm magnet motors When applied to the stator of electric motors makes them just a little bit heavier and a little less efficient that perm magnets. Why would anybody use Ferrites in the rotor? Remember almost all motors before 2000 were all electric except a few linear and steeper Moters.

You might find this interesting as you think about perm magnets
"General Motors (GM) and Sumitomo Special Metals independently discovered the Nd₂Fe₁₄B compound almost simultaneously in 1984.^[3] The research was initially driven by the high raw materials cost of samarium-cobalt permanen"


https://en.wikipedia.org/wiki/permanent