This is an issue of natural resources. China has the right to restrict exports of their raw materials; they'll have to because by 2012, some of the major rare-earth mines will be nearly exhausted in China. Motors and generators don't need to use rare-earth magnets; they can use ceramic or no magnets at all. Car alternators use no magnets as I understand, but they aren't very efficient either. Battery powered and hybrid vehicles may green but there is even concerns for peak Lithium (Lithium ion batteries) and even the supply of lead for lead-acid batteries will be gone in 30-40 years. The supply of lead will end much sooner if off-grid solar power takes off because of the use of deep-cycle lead-acid battery banks. Fuel cell vehicles with average-efficiency electric motors may be feasible. We may be able to work-around dwindling raw resources using other materials that will eventually dwindle. The only sustainable solution is adopt the lifestyle of the Amish. Using real horsepower buggies, mechanical energy from water wheels and donkeys, lighting/heating from lanterns, torches, and wood stoves will curb the demand for materials used for electricity production and storage.