one of the senior research engineer at NASA said that he was not sure whether the fantasy of flying cars would become reality or not.he concerned that by having flying vehicles in the country might end up being too noisy,disruptive and impractical.
in the future we should have quieter disruptions generated by others.car horn alarms and car locking system should be banned.if it is not implied,imagine when millions of flying cars taking off and landing daily next to every house.this circumstances might create an annoyable sounds.
the next barriers is the safety of people on the ground.nowadays,people can reduce their risk of death or accidents by working at home or walking to the office for the short distance.whereas flying cars will bring anew risks of car accidents to lives of all people.
the last one is engine failures.on the ground,it become non-fatal and didnt bring any harmful to others.when it comes to the sky,it might cause a trouble fatal for those who are flying over in tracts.
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