The Trolley problem doesn’t go away in the air (not that it’s that big of a deal to begin with). In fact, it might even be worse. Your car is falling. Do you crash into the crowded street or the crowded building? Which one? The destructive potential is much higher. If safety is really a concern, don’t you worry about giving every person a missile?

Flying cars “solve” a non-problem, because long distance highway travel is already the least dangerous. Most accidents are at intersections and points of conflicts. But eventually flying cars need to land and be near other cars and people. There will still be traffic jams, vast fields of parking lots, and cities made uncomfortable to actually walk or exist in.