While Uber Technologies Inc. has been quietly setting up shop in Pittsburgh for its Advanced Technologies Center, the company's test cars that are now hitting the road are less inconspicuous. If the words "Uber Advanced Technologies Center" emblazoned on the side of the vehicle weren't enough of a giveaway, the device rotating on the top of the vehicle signals this isn't your average Ford. "This vehicle is part of our early research efforts regarding mapping, safety and autonomy systems," Uber…