Well if they had kept that line in the film, I think it reffers to Travis/Trevor because at that point in the film, no one knew about the twin brother, except Amy.
So to Toby, he thought he was the dead brother. So in a way, it would make sense. Never understood why they cut that line out of the film though.
No Accidents. No Coincidences. No Escapes. You Can't Cheat Death. - FINAL DESTINATION 5

I always figured it was The Phantom Hitchhiker story. Don't see how that would fit in the movie though.
http://www.facebook.com/CaligariFilms