First, I would like to say that my thoughts and prayers go out to all that are affected by this tragedy. It is such a horrific situation, and I cannot imagine the grief of their loved ones and friends.
I don't want to speculate on anything at all, but for what it's worth I was just curious about the address provided in the story. The accident was reported to be at 15800 Coulterville Road, but that does not match the map in this story. If you look at Google maps, the north crossing of Coulterville Road and the tracks is around 16400, and it states that the two young individuals were slightly north of that area (larger numbered addresses). It appears closer to the McDonald farm area and a path crossing the tracks. 15800 is much more isolated, and while nearer to other homes, it doesn't look like an area anyone would get to from McDonald farm without quite a trek. Anyway, I am sure the investigators have all of the details, and I will pray they will provide information that may give those grieving some comfort. It is such a tragedy, and my heart breaks for the families. May God provide them great comfort in their time of need.