Wet Highway (1971)

Original title: セックス・ライダー　濡れたハイウェイ

With her wedding only one day away, Mina (Mari Tanaka) spends a night with her former lover Ozaki (Kinji Takinami) at a highway motel on the outskirts of Yokohama. On her way back from her last adventure, Mina’s car hits a hippie-like youth called Ryo (Ken Yoshizawa). Shocked by the accident and, moreover, left alone by Ozaki, who hated to be involved in the trouble, Mina places the unconscious youth in the back seat and drives toward a lake...