He didn't know of a place called 'Serenes'. All he could guess was that it wasn't a place connected with the Earth that he knew, and he knew that ultimately those small details did not matter.

Siegfried knew the cars and the roads-- he just didn't like them. But, it wasn't his place to like them either. It wasn't a part of his role to make those sort of judgements.

"People have relied on my strength for a long time. This isn't a burden. Rather, I'm glad that I could offer, instead of being asked."