^ The only hope for flying cars, the only hope there has ever realistically been for flying cars, is passenger drones. And barring the development of antigravity or some equivalent technology, even those will only ever be niche. Heck, even WITH antigrav tech, they'd still be niche. The cold fact is that there's virtually no good reason for flying cars/passenger drones to be used other than for the pure novelty of it.
And considering that we absolutely need AV tech to advance to make them practical, by the time they ARE available en masse, there'd probably be little to no reason to use them practically. Why would you? To get to work? The same workplace that's probably completely automated? To get to the beach? You'd still almost certainly have to take off and land at pre-designated sites, or else it becomes far too dangerous or a public health hazard. And then you factor in those designated sites and the fact they might still be distant from where you want or need to go, so you'd still need a car. Presumably a flying car wouldn't have that problem, except there's absolutely no physically possible way to make a flying car that's anything other than both a shitty car and a shitty aircraft. None! If there was, engineers would've licked that problem in the 1940s. I'm fairly sure it's engineers who are the biggest critics of flying cars.
Again, barring antigravity technology, this is a dead-end field.
Passenger drones are a much better bet.
It's sad but true, and it's more a case of a late 19th century meme for the Future™ that refuses to die. I think flying cars are a meme that keeps getting repeated because they appeal to a sense of old-fashioned Americana, the ideal of that middle-American family on the road— except in this case, they're in the air, flying over the losers on the ground stuck in traffic. There are really a lot of futuristic dreams we have that aren't very practical barring super-advanced technology that could genuinely be thousands of years away even in a Singularity scenario due to needing to rewrite the very laws of physics (or dedicated to the realm of virtual reality, where there's no need to worry about these restraints).
Things like a space navy, AKA the classic sci-fi dream of a bunch of ensigns, engineers, lieutenants, captains, etc. on some interstellar starship engaging in war with some roughly equivalent alien race in what's essentially a naval battle/dogfight in outer space. Virtually nothing about that makes logical sense in real life. Even the possibility of fleshy, biological humans surviving in deep space for longer than a couple years is an extremely long shot that becomes less and less realistic every passing year as our understanding of the nature of deep space and human biological limitations grows.
Heck, even sapient AI may be this. I'm certain general AI is possible, even very probable in an extremely short time frame, but I'm not 100% certain we'll ever lick artificial sapience. We could, it may be easy, but I also wouldn't be surprised if it's genuinely not going to happen for decades or centuries.
This coming from someone who wants all three!
And remember my friend, future events such as these will affect you in the future