Tesla's ingenious strategy
Tesla -- and Elon Musk -- have accomplished a lot with a combination of ingenuity and timing, but their future (and the future of viable electric cars) relies entirely on a single technological advance that's almost completely outside their control: the physics of storage batteries.In terms of value returned for investment, present storage batteries are almost the single worst modern technology. The storage battery on the Tesla Roadster weighs 990 pounds, stores 56 kWh (about 202 MJ) and discharges in 244 miles (393 km) in normal conditions (vehicle speed and environmental temperature). This is a stellar example of applied science and engineering (it's much better performance than that of similar batteries) but it still represents a big obstacle to wide adoption of electric vehicle technology.As a seasoned former NASA engineer who struggled with these same issues on spacecraft for years, I offer this advice: young people who are trying to decide what do with their lives should seriously consider a career in battery science and engineering. There is room for huge improvement -- huge.