https://motherboard.vice.com/en_us/article/7xm794/flying-cars-air-traffic-control-nasa

For as long as cars and airplanes have co-existed, people have tried valiantly to bring the two together. From a Studebaker with a propellor tacked on, to a two-door sedan with a detachable airplane, the history of failed flying cars is long and thoroughly weird. Even Henry Ford had a brief fling with air transportation with the unfortunately named “Flivver”. After his prototype proved fatal, however, he quickly abandoned the project.

Flash forward to 2018, and the enduring fantasy of safe flying cars is finally inching towards reality. Accepting a package from a flying drone doesn’t faze us, YouTube is flooded with DIY flying-car experiments, and major automobile companies are releasing advanced prototypes for airborne passenger vehicles. Deloitte even predicts that passenger-carrying drones will be commercially available by 2020, with traditional flying cars following suit by 2022.