Automotive technology over time has changed cars from a simple internal combustion engine with wheels to a moving combination of integrated computer systems – such things as Advanced Driver Assistance System (ADAS), adaptive cruise control, hybrid engines and Internet access. Ethernet is introduced in this context to replace the disparate communication means or to tie them together into a single backbone, giving rise to the Automotive Ethernet study case. Automotive industry has been going through different phases in which the progress in technology evolved in parallel with the standardization activity. The progression started from solutions maintained strictly proprietary up to the creation of development partnerships and alliances collaborating to encourage wide-scale adoption of Ethernet-based networks.