Uber's self-driving cars are back. Well, sort of.

Uber's self-driving cars are back on the road in Pittsburgh, but with a lot of changes.
In the four months since a self-driving Uber hit and killed a woman walking a bicycle on an Arizona road, the ride-hailing company has made some changes. The first and foremost is keeping the vehicles in manual mode.
After 49-year-old Elaine Herzberg was fatally hit in Tempe, Arizona, all of Uber's self-driving programs were shut down. In Arizona, those operations were shuttered permanently. In San Francisco,