In this lesson, students investigate the history of safety features in cars and apply this understanding to a question that has existed since the origination of civil society—Under what conditions should governments establish rules for safety that take away individual freedoms? After students have explored the related arguments, they then undertake the challenge of informing law enforcement about how car crashes occurred based on the physics clues left at the scene. We recommend reading Chapter 3, which is included in this book selection and provides a module overview and summary. A materials list, safety notes, standards, assessment, teacher background information, Internet resources, and references are provided. This book selection also includes the Table of Contents, About the Editors and Authors, Acknowledgments, Appendix, and Index.