LK-99 could be the first room-temperature, ambient-pressure superconductor
U.S. rail companies could have adequate staffing / increased safety standards / liability / shorter train length to prevent derailments
Bikes could be on railroad tracks
Trains could be used more in supply chains
Railways could be suspended
Train platform barriers could prevent accidents, suicides, and/or crimes
Trains could have hump-backed stations
Rail lines could become parks, hiking trails, art, or wildlife corridors
Mountains could have a gravity cars
Trains could host writing residencies
Airlines and other public places could be peanut and nut free
