Starting this week, Uber users in Pittsburgh will be able to get rides in the company's new self-driving cars. Those entering one of Uber's autonomous vehicles will easily notice a few differences. Most obvious is the large laser scanner that sits on top of the car and spins really fast. In addition to the main scanner, 64 more laser beams will sweep the area surrounding the car as it drives to detect and measure the distance of objects around it. Other nifty sensors and machine learning algorithms will help the car build accurate three-dimensional maps of the street, while riders get to view how far they've traveled and how the car is doing on an iPad screen in the backseat.