In 2006, Chris Paine made Who Killed the Electric Car?, a classic post-Michael Moore documentary about a capitalist conspiracy to suppress this environmentally sound vehicle. Now he's back with a sequel – of sorts – bearing the goodish news that the electric car is back in production, due to grassroots demand and also to free-thinking, hi-tech entrepreneurs from Silicon Valley who want to challenge the auto monoliths. Paine follows the fortunes of South African-born whizzkid Elon Musk – unironically described as a real-life Tony Stark – who poured his fortunes into developing an electric vehicle. It also interviews industry veteran Bob Lutz, a General Motors honcho who used to be contemptuous of tree-hugging electric-car nerds, but is now cautiously trying to bring one out himself: the Chevrolet Volt (it actually has a gasoline function, in case the battery conks out). So electric cars may possibly be back. But does Paine owe capitalism an apology? The market for electric cars was there, after all, and electric cars finally came along. Perhaps it is simply that the car market is depressed all round; the industry is desperate enough to try anything, and electric cars have simply been granted equal misery to gas-guzzlers. At least we're getting a choice.