Are Transportation Apps in the Zeitgeist?

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(Andrea Bernstein, Transportation Nation)  Transportation information is knowable -- though not always to a centralized authority.    But the proliferation of both smart phones and social media means regular folks can tell each other when the bus is come as quickly as...well...they can tell you there's a revolution underway in the Middle East.  Will Roadify and other apps revolutionize the way we get around?   I take a deeper look, on Marketplace Money.