Sorry to burst bubbles, but (IMHO) flying car not a reality - ever...
The same high standards will have to apply to flying cars as to aircraft, so only those who have trained (ie. with the skills and the money) will be permitted to take to the air; the authorities are never going to permit anyone to take off from wherever they like, especially roads; in any case, does any one know any straight stretches of road (in the UK especially) which aren't clogged with traffic 24/7 ???
It's a great fantasy but a daft idea and will never happen...