Well, now you have:
https://www.mirror.co.uk/news/weird-news/paramotor-daredevil...
Article proves your point though. 10 miles in 30 minutes, required licensing, flight clearances, only works in very light wind, and requires total concentration the whole time. And then he carries the equipment once he lands in what must be a very heavy "briefcase."
Seems fun once or twice, but it swaps out the inconvenience of traffic with a ton of other inconveniences.
I suspect that has more to do with the FAA taking less than kindly to flying ultralights over "congested areas" (I don't know if powered parasails / hang gliders are subject to the same restriction). If I could fly to work I would in a heartbeat.
Atlantic presents Inter Continental Ballistic Car (ICBC).
Travel from NYC to London in a less than 20mins strapped on top of rockets that were designed to carry Nukes. What can go wrong?
(sorry couldn't help)
* Rocket not included. Your millage is guaranteed unlimited after the first 30 minutes. Prone to rapid unscheduled disassembly.
Nets are important.
There are two possibilities when it comes to making a flying car viable
1. Use fossil fuels even less efficiently because now not only does your vehicle have to move forward, it now has to keep itself in the sky.
2. Use electric motors which are already hard enough to sell in cars because they don't give as much range, and then put them in an application where, again, they have to keep something in the sky.
It's just not feasible, along with all the other requirements for training, storage/landing area, etc...