Cuba is of course famous for its old American cars from 1959 or earlier, but here’s a big old Russian Chaika limo that RiveraNotario shot there. It’s dated as a 1978, but it sure looks lie it could be a pre-1960 American car, like a 1955 Packard or such.
Tatra87 did a very thorough take on these second-tier Russian limos here, so I’m not going to repeat any of that. Those rear fins are looking rather 1957 Buick-like to me.
Looks like it even had exhausts outlets in the bumper, like a Cadillac. And from here, the rear window and roof have a 1955-1956 Ford vibe. A real mongrel.