No, this isn’t actually a serious suggestion about how you should try charging your iPhone. Rather, it’s a talking point used by Exxon to try and get people thinking about why gasoline, perhaps other oil and fossil derivatives, are likely to be used a lot longer than some seem to think.
— http://www.forbes.com/sites/timworstall/2012/05/08/one-gallon-of-gas-can-charge-an-iphone-for-20-years/
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AuthorSheffield Leithart