The South Korean manufacturer said it would produce the four-passenger electric “vertical take-off and landing vehicles” at “automotive scale,” without offering details.

The deal announced at the Consumer Electronics Show in Las Vegas could help Uber, which is working with other aircraft manufacturers, to achieve its goal of deploying air taxi service in a handful of cities by 2023.

Jaiwon Shin, head of Hyundai’s urban air mobility division, said he expects the large-scale manufacturing to keep costs affordable for the aerial systems.