Fog not hiding certain object?

Hi all, So I got these old destroyed vehicles to use as a road block from the Asset Store but the fog is not hiding it when the player walks away

I have no clue what has caused this as the vehicles are the only object that doesnt get hidden.
Anything I can do…?

I can’t see anything from your screenshot, but be aware that fog only works on materials that write to the depth buffer, so it won’t work on transparent materials, for example. You will probably need to change the shader or the material for these cars.