RE: The first vehicles of the future today (EN - CAST) Los primeros vehículos del futuro hoy

Of all the science fiction objects that have yet to become reality are flying cars. I don't know if the monopolies of automobile companies have anything to do with it, but cars with fuel other than gasoline were put on the streets first, rather than airplanes.
As you mention this is one of many projects towards that end, even there is already one approved The PAL-V Liberty developed in the Netherlands and in 2018 there was even the pre-sale of the Transition developed by the company Terrafugia which was later acquired by the Chinese.
Personally, I believe that there is still a long way to go for this debt to be paid.