Is our mobility still future-proof? Can we continue to rely predominantly on the car as a means of transportation? How can we make better use of private vehicles so that we consume less fuel per kilometer and per passenger? These are the questions addressed in this volume. A trend is already emerging: people, especially in cities, are increasingly covering distances on foot, by bicycle, or using public transport. However, for those who cannot or do not want to give up the car, there is an alternative: car sharing. This is where our analyses and reports come in, stemming from a project by the German Federal Foundation for the Environment. What causes, needs, and expectations underlie the new enthusiasm for sharing? Which lifestyle groups find these offerings attractive? What ecological and social impacts does car sharing have?.