Who You Gonna Call? Ghostbusters! The Ecto-1 is a 1959 Cadillac Miller-Meteor Sentinel limo-style endloader combination car (ambulance conversion) used in the 1984 film Ghostbusters and other Ghostbusters fiction. The siren sound of Ecto-1 was originally a leopard snarl sound effect. Sound designer Richard Beggs used an Ampex AG-440 recorder and other analog equipment to edit, pitch, and process the snarl to create the unique siren sound. Click the switches to operate the lights and the siren and toggle night and day.