>>1646122This is a proposal I found from certain fringe party in Japan (Happiness Realization Party)
They also call for extending it from Tokyo along Joban Commuter Shinkansen plan and Joban Line to Sendai, then from Sendai to Akita, Aomori, Hakodate, across Uchiura Bay to Muroran, CTS airport, and Sapporo
They think the Shikoku Linear plan will cost 8 Trillion Yen but they claim without doing detailed B/C analysis it can probably generate over 20 Trillion Yen effect to Japanese economy