Porsche's incredible $100 million US headquarters is an amusement park for adults

The next time you find yourself flying into Hartsfield-Jackson Atlanta International, take a look at the northeast corner of the airport. There you'll find a groovy-looking building with sports cars speeding on an adjacent racetrack. What you are seeing is Porsche North America's new $100 million headquarters and Porsche Experience Center, which opened their doors to the public this week. "Today we celebrate a significant milestone in the history of Porsche as we expand our footprint in the Unit...