Ten years after Elon Musk published a paper with his proposal to travel in capsules through vacuum tubes, hyperloop It has only had failures. The new means of transport theoretically allowed reaching 1,000 km/h and up to 1,200 km/h, expectations that are close to the speed of sound. But none of the trials to date have come close to this goal. At the end of 2023, one of the companies that had raised the most money to carry out the project, Hyperloop One, closed its doors. The Spanish company Zeleros, which also aspired to develop the technology, has announced that it has laid off half of its staff and will refocus its efforts on electric mobility.
For some, what happened was the chronicle of a fiasco foretold. Carlo van de Weijer, director of Intelligent Mobility at the Technical University of Eindhoven, has been one of the most critical of the system: “It is a very complicated solution in search of a problem that does not exist. put money in hyperloop “As a serious transportation system it was a stupid idea from the beginning.”
But the technology sparked a flurry of interest in its early days. Musk proposed a suggestive scenario. San Francisco-Los Angeles, a trip that takes about 6 hours by road, could be traveled in 30 minutes. The founder of Tesla and SpaceX was preceded by his image of success and visionary, a factor that could stimulate investment. “A lot of people may have thought 'oh wow, we've missed the Tesla opportunity', which had acquired enormous value, and they must have thought that they could get on board with that new idea. And they raised a lot of capital, because it was a very attractive technology. But they completely forgot that they were not solving any problem,” says van de Weijer.
The failed Hyperloop One raised around $450 million. Its investors included Richard Branson, the billionaire founder of the Virgin technology empire, and the Emirati port operator Dubai Ports World. Other startup, also American, Hyperloop TT, had already secured around 108 million dollars for 2016. “The matter was totally green and people were buying the future,” says Manuel Romana, professor of Transportation at the School of Civil Engineers, Canales. and Ports, at the Polytechnic University of Madrid (UPM). “Those who put money in wanted to jump on the bandwagon at the beginning. But there are several strong technological uncertainties about how to achieve the technology.”
He hyperloop It is inspired by pneumatic tube systems, which were implemented at the end of the 19th century to send documents in large buildings. They are the same ones that are used today in some supermarkets to quickly withdraw cash from the till. “Elon Musk thought that this could be scaled to transport people and goods. But of course, the technology that existed has a diameter of centimeters,” explains the UPM transportation specialist. Hyperloop It consists of vacuum tubes where capsules would be propelled to carry travelers or goods, without any impediment to progress. And this absence of friction would allow the promised very high speeds to be achieved. So far, the most basic theory.
The reality appears more complex. On a visit he made to the Hyperloop One facilities, Van de Weijer came away with more doubts than he already had. “I saw some fundamental problems and I was surprised that there was no serious answer to all these questions. They were spending a huge amount of money developing completely irrelevant things,” he notes.
The cost is one of the difficulties that this mobility expert sees. Linear induction motors would be needed, which are propulsion systems intended to propel the capsules. And the system would require a very powerful one or many of them, placed every certain distance. Something that would be enormously expensive, as would the construction of the steel conduits necessary to support the structure of the transportation network.
Added to this is complicated planning, since how would it work best? hyperloop It is with a straight line layout. “You would have to go through mountains and go through any obstacle and it is very difficult to plan this,” van de Weijer points out. Obviously, any real transportation network has detours and convergences that would be difficult to materialize. He also saw a limitation in the loading capacity. “They were talking about capsules of 14 people launched every two minutes. And they even said that they could make them for 28 people and send them every minute. The capacity was very small compared to that provided by a highway or an airline.”
In this decade all the trials of hyperloop They have remained very far from the concept. “There have been no publications of evolutions. The evidence that was available was nothing like the proposed system,” says Romana. In 2020, Hyperloop One did its first and only test with human passengers and the speed reached was 172 km/h.
In Spain, enthusiasm also spread. The Valencian Zeleros raised 15 million euros—even Juan Roig came in as an investor—to develop the technology. The technological-industrial group Artificial was involved in the construction of capsules, commissioned by Hyperloop TT. He had a balance receivable of 2.2 million dollars, which he converted into a package of shares in the American company. The company assures that it will focus on “the electric and connected mobility market, with real products and customers.”
Romana puts on the table a key factor for the success of any transportation proj
ect: “There are many points that were not resolved. And they must be resolved for an insurance company to accept a policy. Everything is insured. It is not conceivable that a company would risk paying what the courts say [en caso de accidente] because compensation can be very expensive. Therefore, you have to do things that are technically possible and also that the insurer sees it as safe enough to accept the risk.”
Precisely the security of the system is another aspect that raises doubts. “The idea of this was that it would be possible to launch very frequent capsules, one after the other, every few minutes and at high speed,” Romana recaps. “But of course, this raises a lot of security questions. What happens when a capsule stops in an emergency? All the others have to stop in an emergency,” and she adds that this formula is complicated because a stopping distance is needed so that the capsule that comes after does not crash.
Van de Weijer is even more catastrophic in his questioning: “What happens if there is a hole in the tube? The entire system could implode,” he emphasizes, referring to the force with which air from outside would enter a vacuum duct, spurred by the large existing pressure difference. Both specialists agree that these companies were seeking the support of public funds to develop projects that require a lot of capital. In this regard, van de Weijer is blunt: “We should not dream that there will be a transport system of hyperloop nor should we invest public money in such a system.”
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