Is it possible for [Tesla] to develop an EV motor without using Rhea at all!?

I think there are many Tesla investors who have seen this attached photo, but it is part of an image of the motor that Tesla mounts into EVs that was introduced at Tesla Investor Day held in March this year.

On Easter Day, Tesla made a shocking announcement that rare earth magnets will be removed from motors mounted on EVs.

In the Wired article, it was stated that this became a hot topic in the field of physics.

If you look at the bottom of the photo on the left, the amount of rare earths used is described.

It seems that current Tesla motors use a maximum of 500 grams of rare earth 1, and a maximum of 10 grams each of rare earths 2 and 3.

Tesla has declared that it will reduce this to zero in the future, which means that it will not use rare earths for EV motors at all.

According to the article, it is assumed that the rare earth 1 shown in the photo is probably neodymium.

When combined with iron or boron, this neodymium is a substance that can generate a strong constant magnetic field, and is considered a type of rare earth.

As an application of neodymium, it seems that it is a substance that can generate a strong magnetic field enough to move various things such as Tesla cars, industrial robots, fighter jets, etc., but it is said that there are almost no substances that can replace this.

So what will Tesla use instead of this neodymium?

This became a hot topic among some physicists.

As predicted by physicists, they point out that the substitute material might be ferrite.

Ferrite has the advantage of not containing elements involving geopolitical issues.

Also, it means that it has the function of a weak magnet.

Physicists speculate that Tesla uses this ferrite, fine-tunes part of the motor design by arranging the magnets on a computer model, etc., and is trying to reproduce something equivalent to the performance of a motor using rare earths.

[Impressions of Jinbei]

You'll be amazed by Tesla's technological development capabilities. In order to respond to environmental impact issues and geopolitical risks, Tesla is leading the EV industry and working to reduce the use of rare earths.

Moreover, this is not a half-hearted goal of reducing the use of rare earths as much as possible, but rather setting a drastic and bold goal of reducing their use to zero.

I think this is Elon Musk's way of doing things.

It is clear that there is a similar intention in 4680 battery cell development, where you can set seemingly unrealizable goals, unite teams, and make super excellent engineers narrow down their wisdom and come up with solutions, and the same goes for the unboxed process that is going to be adopted in future low-cost models.

Engineers and partner companies entrusted with such a demanding project must be really difficult, but until now, Tesla has brought about innovation in the EV manufacturing process by setting high goals that seem impossible to achieve at first glance, and working on development toward them.

I'm definitely looking forward to this EV motor's effort to reduce the use of rare earths to zero!