Advances in electric motors, battery technology and autonomous software has triggered an explosion in the field of electric air taxis.
Larry Page, CEO of Google parent company Alphabet, has poured millions into aviation start-ups Zee Aero and Kitty Hawk, which are both striving to create all-electric flying cabs.
Kitty Hawk is believed to be developing a flying car and has already filed more than a dozen different aircraft registrations with the Federal Aviation Administration, or FAA.
Page, who co-founded Google with Sergey Brin back in 1998, has personally invested $100 million (£70 million) into the two companies, which have yet to publicly acknowledge or demonstrate their technology.
AirSpaceX unveiled its latest prototype, Mobi-One, at the North American International Auto Show in early 2018. Like its closest rivals, the electric aircraft is designed to carry two to four passengers and is capable of vertical take-off and landing
Airbus is also hard at work on an all-electric, vertical-take-off-and-landing craft, with its latest Project Vahana prototype, branded Alpha One, successfully completing its maiden test flight in February 2018.
The self-piloted helicopter reached a height of 16
