The AI-piloted Sky Cruise would have 20 engines powered by nuclear fusion and would never need to land on Earth, according to an ambitious new design that has just been unveiled.

Up to 5,000 guests could one day find themselves soaring through the skies in luxury onboard a nuclear-powered “flying hotel”.

An ambitious design for the AI-piloted Sky Cruise – which has 20 engines powered by nuclear fusion and is designed never to land – has featured in a new video.

Conventional airliners would ferry passengers to and from the Sky Cruise and even all running repairs would be carried out in-flight, the Daily Star reports.

Hashem Alghaili, who created the incredibly detailed mockup 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 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.

One nervous passenger said: “Great idea putting a nuclear reactor in something that could malfunction and fall out of the sky.”

The fusion technology envisaged to power Sky Cruise is still far in the future, but even if an aircraft like this is one day built, there are some things that never change.

As one commenter pointed out: “I bet I still end up next to someone else’s screaming three year old for the entire trip.”

With the massive development costs involved, some predicted that a trip Sky Cruise would cost a fortune.

A financially-savvy YouTube commenter chipped in: “While this is interesting concept and its is capable to built it with current technology, this thing would be super expensive and no doubt only rich would be able to book this hotel.”