This instructional unit for grades eight and nine tells why and how American small towns declined as a result of the availability and acceptance of automobiles, and it tells of the growth of suburbs and their effect on the city. The learning activities also relate the story of the demand for cars and explain the drain on the cities' sense of space, clean air, and safe streets. In one of the lessons, the students simulate a court trial on the charge - "The Car Has Done Permanent Injury to Humanity." There are four lessons in this unit. They are designed to fit into existing segments of instruction in U.S. history and civics courses. Complete teacher and student materials are provided. (BB)