The film adaptation rights for "The Hitchhiker's Guide to the Galaxy" were originally bought in 1982 by the producers Ivan Reitman, Joe Medjuck and Michael C. Gross. They wanted Bill Murray or Dan Aykroyd to play Ford. But then Akroyd proposed to the producer the idea of shooting "Ghostbusters", so "Ghostbusters" replaced it.
One planet in the journey is the head of Douglas Adams.
The role played by John Malkovich was added by Douglas Adams to the film.
It was considered that Jack Davenport will play the protagonist Arthur Dent, but Arthur is a mediocre person in real life, and Jack Davenport is too handsome. Douglas Adams initially planned to ask Hugh Grant to play Arthur, but the idea was eventually rejected.
A portrait of Douglas Adams and his wife appeared in the spacecraft.
Robert Downey Jr. had hoped to play Zaphod in the film.
The old woman sitting on the street is Douglas Adams' mother.
In the chaotic scene of London before the destruction of the earth, Douglas' super fans will recognize Adams' brother, sister and daughter in a panic rushing into chaos.
Johnny Depp had hoped to play Zaphod in the film.
