Most stuff that gets posted here is just horrible and bleak shit, so here's some catastrophically absurd libertarian brainworms instead.
And this is why I say we have a duty to make the cheap ones and fly them anyway. The laws which make this the case are equivalent to those which made people walk in front of early cars waving flags. Between our current fear of any risk, and the vested interests of the powers that be in existing transportation, the flying car will never happen until someone builds one anyway, and allows everyone else to follow in there footsteps.
Ngl this one seems like it has relatively simple analogies. Flying at low speeds looks similar to driving in low traction conditions: need to make larger control inputs for same effect, but too large and you'll just stall/skid. Available control choices are narrowed. Of course most people are bad winter drivers and you need to practice to get good at it.
3D "rules of the road" would be much funnier. Getting smashed to pieces by a flying Escalade that blew the 8-way stop sign