It was not so long ago that the suitcase was revolutionized by wheels. That patent was granted in 1972; the famous flight attendant staple the Rollaboard was introduced in 1987. Nowadays, everybody rolls, and it's hard to imagine a suitcase that could be more convenient. Except that soon, there will be.
Over the past few years, there has been a feverish push for the next innovation in airport luggage: the bag that rolls all on its own.
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