Okay, the point is yours as you were very close. As you pointed out Jenő Fejes, who built some interesting cars in the 1920s went bankrupt by 1929.
But he had one last try. A man, who interviewed his former collegaues in the 1960s claimed that he was financed by a blacksmith, but I recently received the puzzle photo from the family of a man, who was the real investor. This guy was a director of a furniture factory and Fejes approached him with a novel idea. The result was the puzzle car in 1935. Unfortunately technical details did not survive. There's another photo, which shows the front of the car, but I have yet to receive it.
