22 January 2025 Controversial billionaire and entrepeneur, Elon Musk, wants to connect the two continents with a 4800 km tunnel and “change the map of the Earth”. Through his company The Boring Company, Musk is planning one of the most ambitious projects in the history of engineering: the construction of a 4800 kilometre tunnel that would connect New York to London. This project, which promises to radically transform travel between the United States and the United Kingdom, would cost an estimated 20 billion dollars. The project will use Hyperloop technology, developed by Musk's team, which consists of pressurized vehicles that travel through vacuum-sealed tunnels. The system eliminates air resistance, allowing the trains to reach speeds greater than those of conventional means. If implemented, the tunnel would reduce the travel time between London and New York to less than an hour, compared to the current eight hours for a transatlantic flight. Building this monumental tunnel would involve large-scale underwater construction across the Atlantic Ocean, and whilst The Boring Company has already demonstrated significant advances in tunnel automation technology on projects such as the Las Vegas Convention Center Loop, this challenge is of unprecedented magnitude. Technical and environmental challenges The technical feasibility of the project faces several challenges. The pressure exerted by the ocean water column, the underwater geography and the possibility of seismic activity are some of the obstacles that must be overcome. In addition, the construction of a tunnel of this length raises environmental issues, such as the possible alteration of marine ecosystems and the carbon emissions associated with the project. Another critical point is financing. The project would depend on collaborations between governments, international organizations and private investors to be realized. Reactions and perspectives The project has received mixed reactions. Those for it argue that the creation of the transatlantic tunnel could significantly improve global connectivity, stimulate international trade and create thousands of jobs. Skeptics point to the lack of large-scale testing of Hyperloop technology and the risk of cost overruns associated with large infrastructure projects. Despite his doubts, Musk remains optimistic about the possibility of realising this vision, stating that the combination of technological advances and innovations in automation make the project an achievable reality. If successful, Elon Musk's transatlantic tunnel will not only revolutionise intercontinental transportation, but will also mark a significant milestone in the history of modern engineering, redefining the way continents are connected.