Ending, how it differed

Unlike the rest of the story, the ending of this novel was not very explained.   When Llewelyn died the story took a dramatic down turn the description became vague and the style of writing became completely different.  For the most part the entire book was written in first person but after the death of Llewelyn the writing style flip flopped and became a third person view.  Finally the amount of description at the end fell very short, the descriptive points became very broad and they became few and far between.   By ending the novel in this manner the author leaves a lot to the imagination, I have the thought that there could be a sequel to the novel, possibly describing the life of Chigurh, or possibly his capture.  All said and done the ending left me confused and stuck guessing what is yet to come, in a way a very good tactic to get people to read further.