Every flying car startup is a grift, I guarantee.

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...