Scott A. Hilbert, 19 and a Morehead State University student, vanished after leaving home in Milford, Ohio, during spring break. On March 13, 1988, he left a note saying he would drive the family’s black 1984 Ford Tempo to visit friends at Ohio State University in Columbus; friends there say he never arrived. Family reported him missing on March 21.

On April 1 the Tempo turned up abandoned on a remote dead-end road in the Beaver Dam Mountains Wilderness Area in Arizona, near the Utah border — about 1,700 miles from Milford. The odometer showed the car had been driven about 3,800 miles since his disappearance; more than 2,000 miles of that travel are unexplained. License plates had been removed; someone had apparently tried to push the car off a cliff but it was caught in a tree. Inside were a Denver restaurant matchbook and torn pages from a Long Beach, California phone book. Personal items near the car included Hilbert’s dormitory key, a lug wrench, shampoo, and a kitchen knife from his parents’ home; his packed suitcase was missing. Fingerprints in the car matched Hilbert on the passenger side; other prints were unidentified. Multiple agencies investigated and no solid leads have emerged.

What information about Scott’s movements between March 13 and April 1 could help tie those unexplained miles and items together?