This chapter will provide a survey on cyber-physical systems security related to automobiles. In modern vehicles, there has been discussion on how automobiles fit into the world of cyber-physical systems, considering their interaction with both the cyber and physical worlds and interconnected systems. With many modern vehicles being connected to the outside world, there are many vulnerabilities introduced. Modern cars contain many electronic control units and millions of lines of code, which, if compromised, could have fatal consequences. Interfaces to the outside world (e.g., in-vehicle infotainment) may be used as a vector to attack these critical components.