"Flying cars" have been around since the 1930s (http://en.wikipedia.org/wiki/Flying_car_%28aircraft%29). Modern materials and electronic technologies may make them more practical, but the basic fact remains that such a vehicle is a compromise--usually being a poor car with an acceptable airplane.
The cost factor will probably be the ultimate "decider" in whether a design is successful or just results in production of a few machines for wealthy enthusiasts. It may well be that the most efficient and cost effective solution may still be to pilot your plane and rent a car at the airport.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.