Battery backups for businesses, homes, and computers are not new technology. But the Powerwall is cheap and small, and that could make it a disruptive technology.
Electric cars are everywhere, especially in Silicon Valley.
Elon Musk takes on the Grey Lady to defend his genius and honor while attempting to prove that someday soon, very rich people will be able to make very short trips with limited inconvenience in his electric cars. The point of the charging system and reviews, as i understand it, was to prove that you can use your new $100,000 Model S (base price is $60,000) like any other $100,000 car. The failure of the Times review was that it attempted to do so, and took notes like a car review rather than a technology review.