When You Comin' Back, Red Ryder?

What we have here is a buried gem of low-budget 1970s realist filmmaking. And man, does it tell a story obsessed with the 1970s. Even its poster, a dimly lit diner milieu with the leather-clad back of a long-haired figure turned, and the title seemingly asking a question, emitting a smoke signal to Red Ryder, the popular Western B movie cowboy of the 1940s and '50s, a hero in the classic, oversimplified sense.