Sara Ashley O'Brien

(CNN Money) -- Uber continues to aim for the sky.

The tech company has partnered with NASA to help it develop air traffic management systems for its flying taxi initiatives, chief product officer Jeff Holden said on Wednesday. Holden made the announcement at Web Summit, a technology conference in Lisbon.

Uber previously unveiled its plans to introduce flying taxi fleets, known as uberAIR, in April.

The four-person ridesharing flights won't become a reality anytime soon but Holden said there are plans for demonstrations of the flying car network in Los Angeles, in addition to previously announced cities, Dallas and Dubai, in 2020.

The tech firm has agreements to work with other aviation companies, but this is the first time it has formally partnered with a federal U.S. agency. Uber's partnership is part of NASA's Space Act Agreement, a consortium of industry players working to ensure "safe and efficient operations" of its taxis and other small unmanned aerial systems flying at low altitudes.

"These are exactly the kind of partners we need to make uberAIR a reality," Holden said of NASA.

NASA did not immediately respond to a request for comment on the project.

Known for its unmanageable traffic, Los Angeles will make for an interesting test bed for the flying vehicles.

To get a sense, Uber projects that trips from the Los Angeles airport to the Staples Center during rush hour will take less than 30 minutes -- down from 1 hour 20 minutes by car. It expects to offer rides in the flying taxis for prices comparable to its UberX service.

The goal is to make transportation fast, and inexpensive -- and it hopes the service will be ready for commercial operations "several years ahead" of the 2028 Olympics in Los Angeles.