PITTSBURGH (AP) – Uber is increasing its footprint in the Pittsburgh area with the purchase of a $9.5 million parcel to be used as a new test track for self-driving cars. Uber spokeswoman Sarah Abboud has confirmed the purchase to the Pittsburgh Tribune-Review but says she can’t yet share details of the plan. The San Francisco ride-hailing giant bought the nearly 600-acre parcel in Findlay Township from a developer through an Uber affiliate. The headquarters for Uber’s autonomous vehicles branch is in the city’s Strip District. But the company has been looking for a new location for the test track.