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)