Driving Miss Crazy (1990)

Robert is a cab driver. Every day he drives complete strangers around the city in his car. When a beautiful lady steals his cab instead of paying him, he starts to reflect. Something is wrong with his life. But then he meets radio presenter Karen, who hosts a daily radio show about sexual fantasies. Eventually, the two part ways again and Robert is alone again. As luck would have it, one day Karen forgets her private diary in Robert's cab. In the diary, he finds Karen's wet dreams in written form - and he now reads them out on Karen's radio show as a caller.