You are improvising together,” says Annette Benedetti, sex and intimacy coach and the host of Talk Sex With Annette. Consider going commando or wearing a dress, skirt, or something with an elastic waistband to make undressing easier,” says Karen Bigman, certified sex educator and host of the podcast Taboo to Truth: Life & Sex After 50. “Car sex works best when you stop trying to recreate bed sex and start working with what the space offers,” says Benedetti.