system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why did Drive-In theaters go out of style?
gpt
There's a long list, IMO:

* Universal air conditioning -- who wants to sit in their car on a humid Tennessee night when you could watch the same film in air conditioning

* Changes in movies themselves - ordinarily drive-ins provided only mono sound, so an enclosed theatre provided a better experience

* Trend toward smaller / less comfy cars in the 70s

* Urban sprawl overcoming many locations of drive-ins

* Daylight Saving Time pushing back start times an hour

* Multiplexes -- choices of what movies to watch. Early enclosed theatres would show one movie, 4 times in a day. A drive in could only really show one per day due to sunlight. A multiplex could show 4 or 8 different movies in a day.