The majority of electric cars, hybrids, and electric motorbikes use a Nd/Pr permanent magnet motor. Advantages of high power, low weight, and small size. No viable substitutes are the horizon.

With the phase-change from the internal combustion engines to electric motors diversity of supply of these key REEs needs to be addressed. Sensibly. 

The answer is right-sized deposits that ultimately lead to operations of low-capex and low-opex and the utilization of low-energy processing routes keeping impacts to the environment to a minimum.