The way to make flying cars (and let's drop the sophisticated terminology, we're discussing something called Jetson One) safe for the mass market is to make them available as fleet vehicles for taxi companies such that you can ensure all the drivers are trained and sober and all the vehicles are maintained and inspected. Even if the hivemind insists they'll be self-flying, it's still unsafe beyond normal bounds of unsafe to have ill-maintained flying cars trying to navigate three-dimensional traffic.