Time to do some thought exercise where there is no right or wrong answer. Here is the premise

In a distant future where the technology finally catch up into a flying car technology and it become commercialize and more accessible to the public. What kind of impact to the society that we currently know of upon its release and creation? Would it completely wipes out the land car completely including the land road? What do you think?

I will start.

The most likely to change first would be the traffic law as the current traffic law is strictly to the land road. I would believe that before the flying car is released to the public, there will be a need of moving various kinds traffic items (road sign, stop light, road marks, and etc) airborne, either physically or metaphorically (By this, I mean an equal substitute that has the same function with those). If I were a lawmaker (Probably, will not be a good lawmaker as I know 0 shits on law), I would probably impose the manufacturer to limit the "flying" capability where it can't fly not higher than the height limit, so it won't intrude the plane's traffic