Usage of magnetic rare earth in such vehicles is expected to grow from about 2,000 metric tons last year to 7,000 tons by 2020 and 12,000 tons by 2024, according to a presentation from Lynas Corp., the biggest rare earths miner outside China.  Through exploration and research,  will keep looking for other sources of rare earth elements in order to not obstruct productiveness and competitiveness in green technologies