Here's one place in the world you can already hail a driverless taxi

Although Uber may soon be the first company to launch a self-driving car service in the United States, it won't be the first in the world. That honor went Thursday to nuTonomy, a Massachusetts-based company that has now officially rolled out what many analysts say will transform the future of transportation and the economy. NuTonomy's six self-driving cars are being tested in Singapore's one-north business district, a roughly 500-acre hub the city-state built for science and technology companies. Using nuTonomy's app, members of the public will be able to request a free ride in a specially modified electric vehicle manufactured by Renault or Mitsubishi. Like Uber, nuTonomy said it will have a human accompanying the rider to make sure everything works smoothly.