There are all sorts of technical reasons why building convertibles today is harder, but the real reason they have mostly died off is because people aren’t buying them. If there was a bigger market for convertibles like there was in the mid 20th century, manufacturers would be willing to spend the money and effort to build them.
Why aren’t people buying convertibles? They just aren’t trendy any more. The big status symbol these days is an SUV rather than a sporty coupe.
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