And it's more than 60 years old.
The first line, the Tōkaidō Shinkansen, opened shortly before the 1964 Tokyo Summer Olympics, the 552.6-kilometre (343.4 mi) route connects Tōkyō, Yokohama, Nagoya, and Ōsaka, the four largest cities in Japan.
I'd love to know typical 1960s and 1970s and 1980s predictions about when the US would have ~500 km of HSR. Could the US will get there by '64? 2164 I mean. I think I'm being way too optimistic for Hexbear.