to me, in that he didn't have mental illness but in fact had been having visions throughout. the final scene was real and his wife finally realised everything he foresaw was real. Maybe i misunderstand the above discussion you guys have had on this but its pretty simple to me.

Anyway i agree with you on this as film of the year and looking at the oscar noms its odd that shannon didnt get one. I too really liked drive but similar to when i first saw a history of violence was somewhat confused with what seemed like unneccesarily graphic violence. this took it down a notch or two