According to Mirror, up to 5000 guests could one day find themselves soaring through the skies in luxury on board a nuclear-powered "flying hotel".  Conventional airliners would ferry passengers to and from the Sky Cruise and even all running repairs would be carried out in-flight.

Hashem Alghaili, who created the incredibly detailed mock-up of the monster aircraft, says the nuclear-powered sky cruise “could be the future of transport”.  Asked how many people it would take to fly the gigantic aircraft, he said: “All this technology and you still want pilots? I believe it will be fully autonomous."

But the Sky Cruise will still require plenty of staff. The promotional video promises restaurants and a giant shopping mall in the sky, as well as gyms, theatres, and even a swimming pool.

In the video, the giant flying machine is also suggested as the perfect wedding venue.

However not everyone agrees, with some commenters describing the Sky Cruise concept as the “new Titanic” - pointing out that having lifts on the outside of the aircraft would be far from aerodynamic and that if an aircraft powered by a nuclear reactor crashed, it could destroy a city.

ALSO READ: Weird Wide Web - An airport for flying cars

One nervous passenger said, “Great idea putting a nuclear reactor in something that could malfunction and fall out of the sky," while someone else commented, “I’m sure I would be able to afford a ticket for the lowest deck with no leg space and no access to the lounge”. With the massive development costs involved, some have predicted that a trip on the Sky Cruise would cost a fortune.