No Babich built aat least one car prior to the Leningrad. You can find my article on that on Undiscovered Classics in English and in Russian at a lot of places
![Smiley :)](https://www.autopuzzles.com/forum/Smileys/default/smiley.gif)
Now this one is either the basic version of that 2nd car or a separate, even earlier design.
The picture was shared by the current owner of the Leningrad recently