- This film is the first American film shot by director John Hillcott.
- Hillcott had read a book review before the novel "Doomsday" was published in the United States, and he immediately decided to make it into a movie.
- "Doomsday Dangerous Way" once influenced the production of the game "Fallout 3".
- In order to find suitable locations, the crew visited Pennsylvania, Ohio, Louisiana, Washington and Oregon.
- The film was all shot in real scene, none of the shots were in the studio.
- In order to record a single sound of wind outdoors, instead of mixing the sounds of birds, siren, and motors, the sound engineer used a one-way microphone.
- In the film, Vigo Mortensen's beard and dirty hair are not the result of makeup. These "props" belong to him.
- In order to play the role of his father, Mortensen read a lot of Schopenhauer's works and communicated with homeless people.
- On the set, Mortensen distributed his camera, poetry collections and piano records he wrote and books he bought from Eastern Europe as gifts to the crew members.
- There is almost no music in the film, and only a few passages are composed using counterpoint.
- The release date of the film has been repeatedly postponed, and the earliest release date set by the production company is November 26, 2008. It was later pushed to November 25, 2009, a year later.
The Road behind the scenes gags
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The Man: The clocks stopped at one seventeen. There was a long shear of bright light, then a series of low concussions. I think it's October but I can't be sure. I haven't kept a calender for years. Each day is more gray than the one before. It is cold and growing colder as the world slowly dies. No animals have survived, and all the crops are long gone. Someday all the trees in the world will fall. The roads are peopled by refugees towing carts, and gangs carrying weapons, looking for fuel and food.
The Man: Within a year there were fires on the ridges and deranged chanting. There has been cannibalism. Cannibalism is the great fear. Mostly I worry about food, always food. Food and the cold and our shoes. Sometimes I tell the boy old stories of courage and justice, difficult as they are to remember. All I know is the child is my warrant, and if he is not the word of God, then God never spoke.
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Wife: My heart was ripped out of me the night he was born.