Comment by vannevar

You're right, this is a very fair point. But if you had a choice between two sports cars with similar performance specs and one had 400+ mile range, you'd probably be inclined to take that one, all else being equal. This is a highly optimized version of older battery technology, which will be even older by the time it goes to production; you'd think that a car with a rocket option would also include a cutting edge battery.