Uber aims to debut a flying taxi service in LA sometime in 2020.

On Wednesday, Uber stated it has struck a deal with NASA to develop software for managing “flying taxi” routes in the air along the lines of ride-hailing services on the ground.

This marks a milestone in Uber’s history since this is its first formal services contract with the U.S. National Aeronautical and Space Administration (NASA) covering low-altitude airspace.

Incidentally, NASA has used such contracts since the late 1950s.

Jeff Holden, Uber’s Chief Product Officer stated that the company has begun testing a four-seater car with a speed of 200 miles per hour. It aims to debut its flying taxi service across Los Angeles in 2020, its second test market after Dallas/Fort Worth.

Holden will unveil Uber’s air taxi plans at Web Summit, its annual internet conference, in Lisbon this week.