This chapter examines the growing importance of vehicle connectivity in modern automobiles. It explores various aspects of connected car technology, from basic telematics to sophisticated V2X (Vehicle-to-Everything) communication systems. The chapter discusses key challenges in implementing connected vehicle systems, including data security, privacy concerns, and infrastructure requirements. It also covers emerging business models in connected mobility, the evolution of over-the-air updates, and the integration of vehicles into smart city ecosystems. The discussion concludes with an analysis of future trends and potential developments in in-vehicle connectivity.