Colin Campbell, Tesla's vice president of powertrain engineering, said that Tesla's next-generation electric motor will not use rare earth materials at all, and the next-generation platform will also reduce silicon carbide by 75%.Rare earth materials actually exist in our lives. For example, the magnets we played with when we were children are rare earth materials.Rare earths can be used in speakers and various motors, and permanent magnet motors used in new energy vehicles are major users of rare earth materials.China is the world's largest exporter of rare earths.