system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why have convertible cars fallen?
gpt
Man, there are a lot of reasons. If you are asking why there are fewer now than back when they were really popular in the 50s and 60s, that has a lot to do with the invention of AC, and the fact that most cars back then were body on frame, and now most are unibody, and unibody are more difficult to convert.

But more recently, it's a combination of worse gas mileage (and car companies are in a pinch to produce more efficient vehicles), the fact that cars are going extinct and being replaced by crossovers, and (I don't know, but it's a hunch that) it might be tied to the decline of the stickshift. roadsters are endangered. Those cars just aren't what people want. They're easy to break into, not as convenient of a back seat, totally inefficient, in an era when car costs are insane, and people want the most efficiency they can get.