iv01 -With a post like that I didn't think you were actually looking for an answer to your question. But no as far as I know the vintage tricycle and Leonardo da Vinci did not exist during the same century and he is not present on this forum. Vintage toys are collectibles and I had several from my grandmother which I played with during my childhood.

To quote the original thread:
"The theme for this challenge is favorite toys and you can make any sort of toy you like. It can be a classic toy from your childhood or something more adult like your current favorite gadget. Final entries in this challenge should be models which are textured and lit."
As it's an art challenge to me it is pretty clear that it's about a render of a model. For stylish renders there's a photorealistic toy car image posted to give a clear indication of what we were looking for https://simplymaya.com/forum/showthread.php?t=35582