Excerpt:
It's a scene that fits most people's image of Silicon Valley, not the Motor City: young engineers taking a break with a ping pong game, a business meeting in bean bag chairs, and rows and rows of 20-somethings intently studying computer code on screens.
The setting is two floors of downtown Detroit's Madison Building, which was built in 1917 -- just four years after Henry Ford revolutionized manufacturing with the assembly line. It's now home to more than two dozen high-tech start-ups backed by two venture capital firms.
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