Shortly after shooting wrapped, the gold (prop) "mysteriously" disappeared.
To capture the storm footage at the beginning of the film, Second Unit Director Dan Hefner waited on "standby" for nearly a year for it to rain again in Los Angeles.
To heighten the dramatic conclusion of the film, after a long silence, only natural sounds and no musical soundtrack were used during the closing end credits. The powerful effect is a homage to such films as: Planet of the Apes (1968), The Andromeda Strain (1971), Duel (1971), Race with the Devil (1975), and The China Syndrome (1979).
Glen's (Glen McDougal) car, the "classic" 1990 Honda Accord, was actually writer, executive producer Dan Hefner's personal car.