Apple Inc. is in discussions with multiple suppliers of self-driving car sensors known as lidar, according to people familiar with the matter, a key milestone toward development of its first passenger vehicle. The Cupertino, California-based technology giant is in active talks with a number of potential suppliers for these laser-based sensors that allow a car’s computer to “see” its surroundings, said the people, who asked not to be identified due to the private nature of the discussions. The company has been working on a driverless vehicle project for s...