Sex Rider: Wet Highway (1971)

Fasten your seatbelts for Koretsugu Kurahara's beautifully shot early entry in Nikkatsu's brand new Roman Porno line of classy erotic movies, as the studio's delectable top starlet Mari Tanaka (Love Hunter) takes the wheel in a freewheeling navigation of the Eros and Thanatos sex and death drives. Mina is suffering last minute nerves on the eve of her wedding day, but when she is involved in a hit-and-run, she is forced to take a diversion from her road to the altar to a deserted lake among the mountains in an attempt to cover her tracks. However, the body of the victim, a down-and-out named Ryo (Ken Yoshizawa; Ecstasy of Angels, Guts of a Beauty), is far from as cold as she first assumes.