Cool article - others, like Airbus are taking the view that cars should not be restricted to ground travel, and tested their first Vahana unmanned flying taxi two days ago:
http://www.thedrive.com/tech/18179/first-test-flight-for-the-airbus-vahana-flying-car

I doesn't look to pretty, but it flew for 53 seconds.
I would sell my car if I could get around in one of those - no grid-locked purguatory on the highway!!