Uber's Dream of Urban Transit Via Air Taxis Gets Closer to Reality With Hyundai's S-A1

Eric Allison, head of Uber Elevate, on the company's sky-high ambitions for air travel within cities

LAS VEGAS—At the Consumer Electronics Show, scale matters, and Uber and Hyundai want you to know that their new partnership will bring scale to the skies. The ride-sharing company and auto manufacturer are joining forces to build an armada for the air, a fleet of what they’re calling Air Taxis that they say will usher in a new way to travel.