Aha, that was going to be a bit more difficult to explain. But now on the move, at least they can take their time.

"Hm. We don't know." Simply said, though he elaborates quickly, steadily. It is an answer for both questions - what the void is, and where they're headed.

"The final destination is a mystery to everyone. But...we were taken to assist in saving other worlds from peril. This train will stop every couple of weeks to disembark us in planets that need aid." He pauses there for now, waits for that information to settle. On its own, already heavy.