This type of extreme transportation technology is not yet possible.

Hyperloop shuts down.

Hyperloop the tube train in which low pressure sucks forward in a vacuum tube is one kind of hype. The company ended its operations because it didn't get any customers. But the idea of this kind of train, which reaches about 1500 km/h remains. The political situation is not suitable for this kind of long-distance travel. And there were also some kind of technical problems. But the major problem was the needed infrastructure. The low-pressure tubes were very expensive. And the company ends its operations. Technical and political things destroyed nice ideas.

The idea of the hyperloop gave another very interesting idea for ultra-fast transportation. The idea is that the magnetic levitation train will connect with the hyperloop. The problem is that the speed of this kind of train could be even hypersonic. And if there is a problem with the brakes, that train will impact to wall with hypersonic speed.

The idea is that the train hovers in a magnetic field, and the tube is like a particle accelerator. The magnetic accelerated train travels in the magnetic tube in a vacuum. And that allows it to raise its speed to a higher level than any aircraft can move. Steepness of the curve determines how fast the object can travel in that tube.

The virtualized hyperloop.

In some visions, there could be systems that create whirls or empty channels underwater. Those whirls and acoustic systems could used to make the channels through the oceans. And those channels allow to use of submarines that use rocket engines to travel through the oceans faster than usual.

In that kind of system rotating loudspeakers or propellers make underwater tornado that goes from coast to coast. Then acoustic pike pushes water away from that whirl. And then. The rocket will travel through it. This kind of system requires lots of energy.

The train ride to the future.

Above is the film "Stephen Hawking's train ride to the future. The system will not work like this, because the shockwave from that train forms when it travels through air can destroy large areas. But if the train is closed in the vacuum tube, that thing denies the forming of the shockwave. This hypothetical system can have multiple layers in the tube, and between those layers would travel ions with the speed of light. That makes the system the giant donut-shaped Tipler cylinder. The speed of light is relative to the speed of the environment. That thing allows the virtual crossing of the speed of light or cosmic speed limit, which is necessary for returning to the past. When each of the internal layers travels at 70% of the speed of light, that thing can make this thing true.

Above is a film about the hypothetical time machine. The train travels with the speed of light. The thing that makes this system complicated is that it requires a vacuum tube. That is around the world. And if there is some kind of leak in that tube, this thing causes large area destrouction if the train impacts to air molecules. So maybe this kind of system requires the ultimate, mega-size Stanford torus the giant particle accelerator. That is built around the sun.

There is a possibility that the in future the researchers will use Stanford torus as the ultimate magnet loop. Stanford torus is the megastructure built around the sun. If the Stanford torus is a particle accelerator, it can transport capsules at the speed of light. That system can get its energy from solar panels and antimatter, that it harvests from solar wind. Those particles will impact thin gold layers. And that forms antimatter, that the accelerator can use as fuel.

In the wildest vision sometimes in the future. Engineers will build this kind of accelerator around the sun. The idea is that. The system will accelerate the capsule to the speed of light, and then the radio systems start to increase the object's mass. That system makes it possible to travel at least to the future. Then in the future, the system will start to push radio waves to the train. And that thing should cause time dilation that turns time travel backward. But that requires so massive technology, that we cannot make it yet.

https://interestingengineering.com/transportation/hyperloop-one-shut-operations-dec-2023

https://en.wikipedia.org/wiki/Stanford_torus

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