The taxi-hailing app is working on technology that would allow airborne passenger drones to fly its users short distances around cities, it has emerged, raising the prospect of a future in which skylines are dotted with Uber aircraft shuttling commuters back and forth.

Jeff Holden, Uber’s head of product, told technology website Recode that the company is researching “vertical take off and landing” (VTOL) technology. Instead of the helicopter-style rotor blade drones, VTOL aircraft have fixed wings like planes, enabling them to fly silently, while taking off and landing vertically.