The exact nature of the catastrophe which devastates the world in The Road was deliberately left obscure by its writer. The only clue he gives is "A shear of light followed by a series of low concussions". My own impression was of an environmental catastrophe.
I think The Road is an excellent film. The book is easily one of the best I have ever read, and would recommend people read it before watching the film. It is depressing, but then I wouldn't expect the end of the world as we know it to be anything else.
"A shear of light followed by a series of low concussions".
I sort of felt that hinted toward a meteor impact...
Along with the nuclear winter, and continuous aftershocks.
I think the ending of The Road was fitting.
There would be no resolution of conflict.
No "find a thriving utopia" or "living happily ever after".
What you see at the end of The Road is what the kid is left with.
That is how it's going to be from then on, "as the world slowly dies..."
And as for The Book of Eli....
Sorry, but the super-natural powers of the main character just ruined the movie for me...
The Book of Eli came off, in my opinion, as some poorly written fundie propaganda.
They didn't even have the courtesy of making the story make any sense.