Quatre frowned hearing that, bringing a hand to his chin as he thought. The train moved slightly and he unconsciously stepped back with one foot to stay up without actively moving.

"It sounds like there might have been some electronic interference with the train's systems. Something was making it react to issues that weren't there or cause malfunctions. If there was something outside in the world that was causing such problems, then it could explain why the train evacuated everyone. If there was a possibility of complete system failure if it stayed longer. But of course, that's just a guess since I was not there to see it happen."