Maglev (magnetic levitation) technology is generally considered "operationally efficient but prohibitively expensive to build" in 2026. Because maglev trains require an entirely new, specialized guideway that is incompatible with existing rail tracks, the initial capital investment is astronomical compared to traditional high-speed rail. For example, the proposed Chūō Shinkansen in Japan is estimated to cost over $82 billion due to the need for extensive tunneling. However, maglev systems have virtually no mechanical friction, meaning they have significantly lower maintenance and wear-and-tear costs over decades of operation. In 2026, countries like China are attempting to drive down these construction costs to roughly $25 million per kilometer through mass production of pre-cast segments. While India and other nations have recently labeled maglev "too expensive" for mass transport and are focusing on traditional high-speed rail, the technology remains the only viable path for ground-based travel exceeding 600 km/h, making it a "luxury" infrastructure project that only the most affluent or densely populated regions can currently justify.