In just over three years, Uber's expanded to dozens of cities, dragging taxi regulations into the 21st century.
Since its launch in mid-2010, transportation-on-demand startup Uber has grown from its San Francisco roots to more than 60 cities across six continents. And according to widely circulated internal documents published by Valleywag in early December, the company is on track to beat investor expectations and bring in more than $200 million in revenue by the end of 2013.