Sharp-witted professionals in the field of mass communications have long known that cabbies, who come into contact with a wide variety of passengers on a daily basis, are excellent sources of information and pipelines to an understanding of the general public.
敏銳的大眾傳播工作者，更是早已視每天接觸形形色色客人的計程司機為消息來源和瞭解普羅大眾的管道。