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A drive-in theater/theatre or drive-in cinema is a form of cinema structure consisting of a large outdoor movie screen, a projection booth, a concession stand, and a large parking area for automobiles. Within this enclosed area, customers can view movies from the privacy and comfort of their cars. Some drive-ins have small playgrounds for children and a few picnic tables or benches.
The screen can be as simple as a painted white wall, or it can be a steel truss structure with a complex finish. Originally, the movie's sound was provided by speakers on the screen and later by individual speakers hung from the window of each car, which was attached to a small pole by a wire. These speaker systems were superseded by the more practical method of microbroadcasting the soundtrack to car radios. This also has two advantages: 1.the film soundtrack to be heard in stereo on car stereo systems, which are typically of much higher quality and fidelity than the basic small mono speakers used in the old systems; and 2. it prevents the driver from forgetting the speaker is attached to their window, and driving off, which breaks: the cord connecting the speaker to the sound system, the driver's side window, or both.

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