Killer places a scorpion, spider, or snake in a motorcyclist’s helmet resulting in death. I recall the film taking place in a desert/rural location. Movie was rented during the VHS/Blockbuster Video era in the late 80s or early 90s. Plot may involve students or possibly a film crew near a highway being menaced. Also may include “highway” or “freeway” in the title. Been trying to figure this one out for over 20 years.
That must be it. The description/title is so close to my memory, however the only thing I remember is the scorpion scene and some empty roadside desert landscapes. Gonna watch it now to confirm. My sincere thanks for the help!