“.I’m not so sure milliuons of people in flying cars is a good idea.Envision the current traffic carnage in 3D.”
Meh, if everyone had that attitude, we’d still be driving buggies. Or walking.
There is a huge difference between driving and flying.
Have many cars driving directly above your home today?
Typically the are several disabled vehicles every day that barely make it to the side of the road and impede traffic in a city like Cincinnati; multiply that by the rest of the country ,realize planes can’t just pull to the side-they crash, and even you might understand there are problems.
I believe there is also a slight problem of increased fuel consumption in that it takes more energy to keep a relatively compact mass in the air than the same mass rolling on wheels.Ultralights already exist and are about the closest we’ve come to universal aviation.But even ultralights need some room to take off and land.And trunk capacity is extremely limited.
Also,to preserve any semblance of privacy ,and traffic control,the flying cars in any significant number would need tighter air traffic control than exists for today’s aviation.Probably means computer/GPS/? system that flies the aircar only along approved paths,spacing,etc. Tailgating in an aircraft is insanely dangerous.
You could also demand a personal submarine capable of exploring the Titanic for everyone;all you need do is reduce the cost of the current model by a factor of 1,000!
Peter Pan was a story;everyone else had to grow up.