There's a few one that existed before then. Quite crazy to think that some existed in the 70's, almost half a century ago: https://en.m.wikipedia.org/wiki/Autom

There's a few one that existed before then. Quite crazy to think that some existed in the 70's, almost half a century ago: https://en.m.wikipedia.org/wiki/Automated_guideway_transit https://en.m.wikipedia.org/wiki/Automated_guideway_transit