NASA：2016年超级高铁（SuperLoop）商业可行性研究报告（英文版）

Hyperloop is a concept for very high-speed, fixed-guideway, intercity surface transportation, usingcapsule-like vehicles that operate in sealed partial-vacuum tubes. At this stage, the technology isunproven, but it has elicited a great deal of interest from journalists, investors, engineering firms, andgovernments. This research is being conducted to provide a high-level evaluation of hyperloop in termsof its commercial potential, environmental impact, costs, safety issues, and regulatory and