The concept is called Sky Cruise and is considered the future of aviation.
It will be powered by 20 nuclear reactors and will be autonomous without pilots. It will be designed to never land. Even breakdowns and supply will be done as this will be in flight.
It will have a very large number of staff and will have a shopping center, swimming pools, gyms, cinemas, etc.
[Source: http://www.gazzetta.gr]
