Uber resumes self-driving car tests, but only in manual mode

Uber stopped all self-driving car tests following a fatal accident in Tempe, Arizona earlier this year, but today they're getting back on the road in limited fashion. The company says that it is taking a "first step" towards resuming autonomous car tests in Pittsburgh -- its vehicles will be on the road, but only in manual mode for now. Uber says that specially-trained "mission specialists" will be behind the driver seat in all cases; those drivers will be in control of their cars at all times. A second specialist will sit shotgun, recording any "notable events." While it may not be immediately obvious how having manual drivers helps the self-driving program, Uber notes that it lets them visualize more scenarios its vehicles will encounter in real time.