2023's theme for Otakon is trains, since I haven't seen a discussion thread set up for trains, let me start one if that's OK with everyone!
A pretty recent development regarding trains in the US is there is a group known as the Northeast Maglev that is working with the Central Japan Railroad Company on an attempt to bring Central Japan Railroad's SCMAGLEV (SuperConducting MAgnetic LEVitation) train technology to the NEC (the NorthEastern Corridor).
This high-speed passenger rail train line is proposed to go between Washington D.C. and New York City with an approximate one-way