RE: The Forbestown connection ...
I suppose that may have not been considered relevant information by the time of the WP article. ...
The authorities checked with a single person known to have been acquainted with Mathias, who told them he hadn't seen Gary in over a year. It would have appeared to be a dead end line of inquiry - checked and checked off. However ...
The bit that's new to me is that Forbestown was reputed to be a haven for young folks who wanted to 'drop out'.
That sort of late 1970's community was usually a quiet nexus for drug-related activities. Mathias' discharge from the Army wasn't solely because of his schizophrenia; there were unspecified issues relating to drug use. Mathias had been living at his family home and working for his stepfather (the seemingly grumpy / pessimistic Mr. Klopf) for at least two solid years. Getting to Forbestown is the only substantive explanation for why the 'boys' drove eastward from Oroville that Friday night, onto the very road where the car would get stuck.
Here are two (admittedly wildly speculative) scenarios that come to mind:
Mathias convinced Madruga to make a side trip to the Forbestown area either:
(a) to obtain some drugs OR
(b) to drop off Mathias, who'd quietly planned to 'drop out' and was using the Chico trip as a cover for his getaway.
The 'deliver Mathias' (b) version could go something like this:
- Mathias announces he's leaving and directs the group to take him to Forbestown.
- They part company, with Mathias convincing Weiher to swap shoes with him (Mathias is heading to parts unknown and could really use the boots; Weiher can wear Mathias' sneakers the rest of the way home, because they're not up in the mountains with deep snow all around).
- The four remaining Gateway Gators head back from Forbestown, Madruga makes a wrong turn (right rather than left) onto the very road the car would be found on, and they drive off toward disaster.
- The four die. Mathias' body is never found, because Mathias wasn't with them on the last leg of their doomed trip.