IT'S HARD TO IMAGINE living the way we did before the supercomputers in our pockets replaced our corded rotary phones, laminated maps, encyclopedias and camera film. We're still waiting for jet packs, but the very near future promises self-driving cars, virtual reality vacations and same-day delivery of consumables for our 3D printers. These innovations are coming quickly, but they don't happen all at once. Chances are, by the time we're napping comfortably behind the wheel (or touchscreen), gas stations will be the same sort of hazy memory that phone booths are now.
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