Sex Highway: Woman's Parking Lot (1974)
Original title: ＳＥＸハイウェイ 女の駐車場
Sex Highway: Woman's Parking Lot is a 1974 Japanese-language romance movie directed by Tadahiko Isomi, with a running time of 1h 10m. It stars Yūko Katagiri, Marie Fuji and Naomi Oka.
A young wife dabbles in casual prostitution to secretly help her older husband improve his business. But when she falls for one of her clients complications ensue.