Personally, I don't read or marvel at technology in echo chambers but consider how they are situated and interact with sociopolitical processes. The great space race was a great technological achievement that would have never happened without the driving force of the cold war. The suburbanization of car and home ownership was a collaboration between state and market in response to the postwar and great depression. Highways and roads didn't just fall out of the sky for private car manufactureres but were political projects. This cuts the other way too with developments that are stiffled by monopologies and market conquests.
Similarly, the bottleneck to flying cars (and many other things) in the everyday isn't a technological bottleneck but are social-economic-political one. For me, flying (thruster?) cars are quite abstract and meaningless without considering how it becomes integrated into everyday life. Air and road traffic have well established infrastructures associated to their uses and regulations. Does it count as blowing a redlight if he turned on the thrusters and flew over them? Who regulates? Do all our current infrastructures (material, legal) need to be retooled? Many city folks already have no business operating a 3000lb cars and do a poor job keeping four tires on the road or away from others. Are we going to have people cutting each off on the vertical plane during rush hour? That will surely lead to many firey explosive endings that trickles down to insurance premiums.
I got excited for about 1-min with jet packs before all the pragmatics flooded my brain. But if I had to chose I'd bet on jet pack travel happening first before flying cars LOL