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SmartBike in Washington

A SmartBike subscriber uses a pass card to check out a bicycle in Washington. For $40 a year, subscribers have access to a fleet of 100 bright red three-speed bikes, kept in 10 electronically controlled self-service racks across the downtown area. An online map shows the location of each storage rack, the number of available bikes and the number of open slots for returns.Tim Sloan / AFP/Getty Images
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