While Google has been the company that's most transparent about testing its self-driving car, Uber is the one most experts in the field are watching closely.

Meet Uber's first self-driving car

It's a Ford Fusion hybrid

Uber has finally released the first official photo of the self-driving cars that it is testing on the streets of Pittsburgh, almost a year to the day since reporters in that city first spotted an earlier prototype. The car, a hybrid Ford Fusion, is collecting mapping data as well as testing its self-driving capabilities, and is equipped with "radars, laser scanners, and high resolution cameras to map details of the environment," Uber says in a blog post. But as it collects data, a trained driver is always behind the wheel.