The Alvis automobile George Reeves is shown washing in the film is an extremely rare model that was shipped to the location for use in the movie, as it is one of the few existing examples of the car Reeves actually owned.
The Los Angeles police cars seen at the beginning of the movie
outside George Reeves' house are from the time period, however the red rotating warning light on the roof is inconsistent with LAPD use at the time. The LAPD cars had the two barrel lights with a siren mounted in between them on the roof. This type of warning system was used until at least the late 1970s early 1980s.
How much sex, violence, and profanity are in this movie?
For detailed information about the amounts and types of (a) sex and nudity, (b) violence and gore, (c) profanity, (d) alcohol, drugs, and smoking, and (e) frightening and intense scenes in this movie, consult the IMDb Parents Guide for this movie. The Parents Guide for Hollywoodland can be found at http://www.imdb.com/title/tt0427969/parentalguide.
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