Curtiss Autoplane. Fulton Airphibian. Taylor Aerocar.

Businesses and entrepreneurs have been promising a mass-produced flying car for more than a century. None have succeeded, but that hasn’t stopped Hyundai and Uber from wanting in on the action.

In Las Vegas on Monday, at the Consumer Electronics Show, the two companies announced that they were joining forces to develop an all-electric air taxi that would be part of a future “aerial ride-share network.”

“We’re looking at the dawn of a completely new era that opens the skies above our cities,” Jaiwon Shin, the head of Hyundai’s Urban Air Mobility division, said at the announcement. “We will be able to fly on demand — just imagine that.”

The South Korean automaker showed a small-scale model on Monday and offered a virtual-reality experience. A nonfunctioning full-scale model was later on display.