I've got an interview with Google coming up, and I don't want to jeopardize my chances by asking this at the interview.

I live in Boulder at the moment, but I've always wanted to experience living abroad. I know that Google has offices all over, and I'm curious whether Google employees have the opportunity to transfer without having to re-interview or anything like that.

If I got a job, which I know isn't a piece of cake), would I have to leave Google to move abroad or could I continue to work for them out of another office to scratch my itch without taking an extended break?