I guess this means that freight trains won't be self-driving in the near future(? ) Is anyone even working on automated long distance trains (in the U.S. or els

I guess this means that freight trains won't be self-driving in the near future(? ) Is anyone even working on automated long distance trains (in the U.S. or elsewhere)? (i.e. not airport shuttles / subways). Seems like that would be the lowest hanging fruit in the world of automated transportation.