These accidents happen from time to time. I can recall two such on the Mt. Lemmon Highway near Tucson some years ago. A car and a motorcycle (separate incidents) left the roadway where there was no guard rail, hence no visible trace of an accident. We removed the cyclist's remains six weeks after the accident. The victims in the car were found over a month after the accident.

In cases like this, where do you begin your search? and on what basis? Cell phone records can help pinpoint areas today, but what if the phone has not been active?