The Uber Technologies Inc. logo is displayed on the window of a vehicle after dropping off a passenger at Ronald Reagan National Airport (DCA) in Washington, D.C., U.S., on Wednesday, Nov. 26, 2014. Uber Technologies Inc. investors are betting the five-year-old car-booking app is more valuable than Twitter Inc. and Hertz Global Holdings Inc. Photographer: Andrew Harrer/Bloomberg via Getty Images

Uber has taken a lot of people for a lot of rides—two billion, that is, according to CEO Travis Kalanick in a Facebook post today. The milestone comes only six months after Uber said it reached 1 billion rides.

“These trips happened in 16 countries on five continents, from Costa Rica to Russia and from China to Australia,” Kalanick said. “The longest of the bunch lasted more than an hour as the rider and driver worked their way across Jakarta, Indonesia’s capital.”

Uber has exploded around the world, but its global ambitions have hit a number of roadblocks. The company has been slapped with government fines, sued by drivers, targeted in protests, and even banned outright in some cities.

In Uganda, there haven’t been any major incidences in its path, except for other competitor’s coming up in the space to fight for the market. In recent weeks, it started testing its UberEats in Nigeria & Kenya with UberIceCream.

But none of these challenges appear to have dimmed Uber’s quest for world domination, and the company continues to grow rapidly. It took Uber five years to hit 1 billion rides, a milestone it reached last December, and a mere six months to reach the next billion.

[CNN Money]