Really cool! I like it that the Japan generally is not given to the BS-till-you-make-it attitude of SV.
The spiritual successor to the 60s pioneering project, the Chuo Shinkansen, which is the result of proven technology developed over 30-40y continues to chugging away slowly and silently, at an estimated cost of $80B to connect Tokyo with Osaka (in '2037).
Musk's Hyperloop's on the otherhand is what you get from SV. BS vaporware, which would magically connect LA and SF at a mere $6B, with technology which hasn't even been invented yet! Even the current Shinkansen costs twice as much as this valuation (in India!).