Social workers in urban areas attempt to carry out the profession's commitment to social change and social justice amid growing inequality, racial polarization, and a physical environment that reflects fears and antipathy toward poor people who reside there. The authors argue that changing urban conditions have prompted a need for innovative models of field practice that specifically aim to prepare students for social work practice in the city. The paper describes a "mobile seminar" designed to enhance the field education of students preparing for practice with children and families in Detroit's inner city.