In summary from the article: "... Each electric Prius motor requires 2.2 lb of neodymium, and each battery uses 22-33 lb of lanthanum. That number will nearly double under Toyota's plans to boost the car's fuel economy"

I think if you take into the account all the extra energy used to manufacture the exotic parts, the extra parts themselves, and you figure the kilowatts of electricity, and convert all that to BTU's, and then to gallons of gasoline. Divide that by the number of miles traveled in the projected life of the car - I bet that the MPG won't be any better than todays gasoline powered car.

I'm guessing the batteries are expensive, and have a finite life. Would it be fair to say that a battery replacement for a 6 yr old electric car would exceed the price of the car?