Executive Summary: The Derailment of the Fifth Mode of Transport The Hyperloop concept, based on entrepreneur Elon Musk's 2013 white paper, was presented as a revolutionary "fifth mode" of transportation promising near-supersonic ground travel. However, by the close of 2023, the sector had undergone a severe market correction marked by corporate failures and strategic retreats. The most significant player, Hyperloop One (formerly Virgin Hyperloop), declared bankruptcy and ceased operations at the end of December 2023, effectively ending the most heavily funded commercial effort. This analysis confirms that the sector's decline was driven by two distinct types of market exit: (1) outright corporate liquidation and bankruptcy (exemplified by Hyperloop One and Arrivo Loop), and (2) pragmatic strategic pivots where companies abandoned the core vacuum-tube technology in favor of more attainable, incremental systems (e.g., Nevomo and Zeleros). The systemic failure stemme...