At this rate this topic will be closed or moved to the war room, so this is my last post in the thread.
Citing Webster's dictionary 1913 edition, among the many definitions of car, there are some interesting ones.
1. A small vehicle moved on wheels; usually, one having but two wheels and drawn by one horse; a cart.
2. A vehicle adapted to the rails of a railroad. [U. S.] &hand; In England a railroad passenger car is called a railway carriage; a freight car a goods wagon; a platform car a goods truck; a baggage car a van. But styles of car introduced into England from America are called cars; as, tram car. Pullman car. See Train.
5. The cage of a lift or elevator.
6. The basket, box, or cage suspended from a ballon to contain passengers, ballast, etc.
From definition four onward it describes "cars" that don't even have wheels, neither four wheels only. Those concepts have been updated or commonly replaced with new words. That's why his concept of "flying car" are what we actually know as "roadable aircraft". Something that has been invented in the 1930's and through the time has acquired such term. And it's also the reason current concepts of "car" include definitions like "(dated) A wheeled vehicle, drawn by a horse or other animal" or "archaic: carriage, chariot".
So, and just like Tomu Breidah says, if such contraptions like "Hovering Transport Vehicles" ever exist they will be simply called "cars" too. And the four wheeled motor car will be yet another dated or archaic term.
In short, all this time we were defining current terms to a guy thinking as if he still lives in the beginning of the past century. An so far, given the people who has participated in this thread, few or almost no one shares his definition of a flying car. Also, if I were a magazine or salesman trying to bring attention to my product, of course I will be calling "flying car" to something that essentially is "roadable aircraft".