Cadillac Eldorado convertible.

The illustration above shows what a possible rebirth of the Cadillac Eldorado could look like as a convertible. Something Cadillac hasn’t produced since 1976.
The first Eldorado was introduced as a limited edition convertible in 1953. And became a high-end trim or another Cadillac model starting in 1954.
That last 1976 model was part of the 9th generation, produced from 1971 to 1978. GM advertised the 1976 Convertible as “the last American convertible”, which of course turned out to be wrong.
The next generation ended up offering a convertible version starting in 1984. Although these were actually built by independent coachbuilders and not GM directly. And of course, later came the Cadillac Allante…
As we mentioned before, Cadillac is indeed working on a couple of new sedans based on the Ultium platform. There is no info available yet on these new models, except they will offer a fastback design. Let’s hope GM tries to include a few retro design cues into these new models. At least on the larger sedan. It wouldn’t seem to be that hard to come up with a really nice coupe or convertible based on the longer sedan platform.

Back in the real world, the only way you will ever be able to drive a big Eldorado convertible is to get a used one. From the 1970’s.
Since GM doesn’t seem to have anything comparable in their future plans…