Uber on Thursday announced plans to begin testing semi-autonomous vehicles in Pittsburgh later this month. Its first partially self-driving Volvo XC90 vehicles reportedly will be assigned at random to customers who use the company’s app. Each of the prototype cars will have an actual human on board to act as copilot and monitor the vehicle’s performance from the driver’s seat. The passengers who are provided transport in one of those vehicles reportedly will receive a free ride. Uber, which launched in 2014, has its headquarters in Pittsburgh.