@interestingengineering: Train track’s gauge determines the distance between the inner sides of the two parallel rails on a railway track. The gauges for the train wheels and the tracks should be compatible. This train changes its gauge from 1000 mm to 1435 mm in a matter of seconds and goes on its merry way. Simply amazing. #TrainTrack #Gauge #RailwayTrack #TrainWheels #Compatible #GaugeChange #Amazing #Technology #Transportation