Here’s the thing everyone seems to be forgetting. Once a motorized vehicle leaves the ground under powered flight it is no longer under DOT’s domain it is now under FAA’s domain. FAA licenses are way harder to get and way easier to lose. They also require annual tests to keep. This is why flying cars are a non starter, because to pilot them you need a general aviation license.
There are exceptions but it’s always in the ultralight or experimental categories. A release of this car will fit neither of those categories.