I don’t understand your comment. Neither the Tropfenwagen nor the Schlörwagen look anything like the Tatra you linked to.
https://en.wikipedia.org/wiki/List_of_Ford_vehicles#1930s%E2...
I don’t doubt there are many cases of blatant copying in technology, but I am having trouble to see any connection between either Tatra and the cars discussed in the post. Also: the “Czechoslovakian” Tatra linked to was designed by an Austrian and a Hungarian.