Comment Use? Yes. Drive? No. (Score 4, Insightful) 606
When we have sufficient energy (either through efficient solar harvesting or new types of fusion power, or whatever) to make flying cars feasible, the technology will eventually catch up and make it possible.
The way I see it, that technology will include an autopilot capable of navigating and coordinating with other vehicles.
So yes, I think there will be a time when we commonly use flying cars. No, I don't think people will actually have to steer them in 3D.