If this railroad is propelled by pressurized pneumatic air (like a drive through bank delivery system), do you realize just how hard it would be to maintain air pressure seals, and pipe joints, with ground heaving, thawing, and movement of the earths tectonic plates ? and what would these be made of ? Plexiglass tubes ? And how would they extract passengers if the air pressure propulsion failed midway en route ? And what in the event of fire ... everyone on-board would be trapped like giant gerbils, in a huge smoke filled Habit-Trail tube system, with no way out ... OK lets power it by electromagnetic propulsion, like the Germans tried, and failed at on their mag-lev rail system ... Not in your lifetime, if you live to be 98.
Some things are just too utterly lame brained, and so radically hair brained, and rediculously far fetched, to ever feasibly pan out ... no matter how advanced technology you have in the year 2093.
We were to have a Moon base, jump off, to distant planets by the year 2005 ... lol ... At any given time our world could suddenly end by a Matilda asteroid like in the movie starring Steve Carell: "Seeking a Friend for the End of the World" ... and radical extremist terrorists, or hostile governments, will probably make our demise definite in your own lifetime ... I would not plan on living to be 98, and being shot through a tube, like a human blow dart.
A trans siberian railroad connecting Alaska to the Soviet Union ... an Atlantic Ocean Chunnel, from NY to Paris ... Popular Mechanics magazine "Flying Cars" ... Naah Naah Naah, Computer says: Noooooo !
https://www.youtube.com/watch?v=sX6hMhL1YsQ
https://www.youtube.com/watch?v=RM-ohazWxR8