The book is better than the movie. I read that book about the same time I read The Patriots
I didn't see the movie until a year after reading it when I found myself stuck on a 5 hour plane ride. It was that movie or some Disney thing.
Kyrat pegged it.
There are hints all through the book that the father and boy are being shadowed by the other family that aren't quite so obvious in the movie.
Anything along a road is going to be picked clean. Farther off the beaten path you would have more chances to scavenge.
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