The salt air eats anything that is iron or steel. If there were any old cars on the islands they are now piles of rust. In our travels there I did not see any old cars. We spent several years cruising the islands in our sailboat. Hawaii is the same. In my travels there, the old steam locomotives used on the sugar cane plantations were rusted beyond any restoration. You will see Model A and early V8 hotrods in Hawaii but they are recent imports and kept in garages.
Cars in Cuba are absolute junk. Fenders held together with license plates, heavy rope bound to rims for tires. WayneThere have been plenty of cars in Hawaii. I parted out a T there and brought home a 39 std. I saw several cars including a 32 phaeton and a 29 phaeton on the north shore back in the 60s. Of course anything that is run on the beach is going to suffer.
Puerto Rico has a MAFCA chapter toothere are a lot of Model A's and T's in Puerto Rico. You see many great examples during the AACA shows.
Most in Cuba have Russian diesel engines I've heard