In this chapter we describe the systematic development and implementation of mobile services in the automotive sector. This includes a design framework that represents different requirements of automotive service engineering. The framework is used following a corresponding process model which combines iterative service development with classical prototyping. The framework and the process model are applied to a new mobile service MACS MyNews, a personalizeable, interactive news service, allowing the driver to be the editor and end user of his newscast at the same time. In order to design this service, we start with designing service scenarios. For these service scenarios a matching added value network is derived, technologies for service provisioning are chosen, a prototype is implemented. The service is thenevaluated especially concerning driving safety.A final user evaluation helps the designers choose whether or not to include the service in series production before planning the service roll-out.