Today assistance systems are almost as natural a part of a new car as the engine. Thanks to the interaction of the systems, the car is becoming increasingly more intelligent and supports the driver in more and more tasks. The vision is of an automatic car, in which the driver can lean back and let the system take the wheel. However, at any time the driver has the option of manually overriding the assistant. Moreover, electronics grant cars the ability to communicate. Via the internet and cellular network, cars can communicate with each other (Car-to-Car communication) or communicate with infrastructure (Car-to-X communication).