You must be 12, now that you are looking for an 8 year old to kid.

Make the airspace inaccesible and it will be very secure. You won’t even need participation of security agencies for that, they can just ask FAA to do the job.

FAA is always on the safety and security side of things right now but consider the near future, a decade from now. Technologies that are being worked on now will have matured by that time. They will as there is a huge amount of money to be made in the area. So the initial drawbacks of anything flying be it drones or…

Dude you talk in an area where you have no clue about. And try to do simple reasoning to reach conclusions.

Enviromental impack doesn’t only mean energy consumption, milage or carbon footprint. It also means needing a long airport landing strip or an isolated heliport. Helicopters throw a lot of debris and will not be suitable to fly near people.

Taking off from the ground is the most dangerous thing a flying car will do if it can not handle the rest of the requirements it is supposed to handle. In the air if you don’t have the necessary extra power to cope with varying forces you are already as good as dead. A ballistic parachute is what saved the Aeromobil…

Efficiency is for efficiency freaks.

Also;

No they wouldn’t. Because of cost issues. However Tesla Motors did. Tesla is using aluminium extensively to decrease weight . The same way aeropspace industry uses aluminium. Carbon composite is lighter but it doesn’t lend itself well to mass production so aluminium is a better choice.

Then you should go to the other side of the equation and descrease weight instead.