I really, really hope that flying cars never come to pass.
Right now, when an accident happens, we know where it will happen: on the road or right next to the road (more-or-less).
If flying cars were ever to become a thing you could be killed by a drunk driver crashing into the roof of your house / top floor bedroom, hundreds of feet from any road.
Disclaimer: I haven't read the article (It keeps asking me to pay money to subscribe)(which is fair to do, but I'm just not doing that right now)
I'm 99.9% certain these vehicles would be forced to fly over existing roads. And it's likely the final product would be autonomous to ensure no one could do a random fly over of your house.
The FAA would never require aircraft to fly over roads. These things (if they can actually be made to work) will be subject to the same regulations as any other general aviation. We are decades away from having autonomous flight control systems which can be certified for carrying passengers and flying through regular airspace.
Disclaimer: I haven't read the article (It keeps asking me to pay money to subscribe)(which is fair to do, but I'm just not doing that right now)