I will wager the car will never be allowed to fly. Look back at back issues of Popular Science for the last 40 years and you will see a lot of prototypes that were never allowed to see the light of day. Too many economic juggernauts have an interest in maintaining the old technology. We are using an internal combustion engine to drive our cars that is technology more than 100 years old. We will continue to maintain it as long as there are petroleum companies making money out of oil consumption, running gas stations and refineries etc.. Too many people depend on things as they are to make a living, hundreds of thousands of jobs etc.. It would take an act of God to change things.
The same applies to health. The pharmaceutical industry depends on sick people, as does the medical industry and hospitals. It's all a business and making money is the rule of thumb. Who wants healthy people who live too long? There is no money in that.