There's already a lot of these types of trains all over the world[0] [0] https://en.wikipedia.org/wiki/List_of_automated_urban_metro_subway_systems#Grade_of_Au

There's already a lot of these types of trains all over the world[0] [0] https://en.wikipedia.org/wiki/List_of_automated_urban_metro_subway_systems#Grade_of_Automation_4_Systems https://en.wikipedia.org/wiki/List_of_automated_urban_metro_...