I understand your concern. However, if I were to put it online for free, I would be infringing copyright. Then anyone could take it for free, modify it as they wish, distribute it on other sites, claim they created it, and even make money from it , which would be a problem for me, though not for others.
As for Mercedes, they wouldn’t take issue with it since the car is depicted realistically and with high detail, accurately reflecting reality. It’s not a caricature or a parody that could harm the brand’s image.
Additionally, I fully comply with Giants’ requirements and terms. I don’t use any content created by them in the game; all the mods are entirely my own creations.