Yeah I'm sorry, I was wrong with the vehicle limit. It is indeed 180 and not 200. Seems my source exaggerated it a bit.
Before any of you ask, the reason why the last ID is 179 is because the vehicle counter starts at 0.Regarding the model limit, however, I was correct. It is 50 because after 50 vehicles with 50 different models are spawned, your game will simply crash, regardless of whether you see the cars or not.
This is as far as I could go.