It would be nice, but with a flying car, there would be lots of rules and prescriptions to respect too (hight, air traffic, speed, "routes", timing, flying permission, defined take off and landing sites, no fly zones, emergencies, priorities, weather, privacy, safety, obstacles, etc.), parking space, and you might need a special training to obtain a pilote's licence.
Oh, and if too many use a flying car, mind the air traffic jams:


