Automated systems, and autonomous vehicles (AVs) in particular, promise to profoundly change everyday life. In recent years, lot of research activities and progresses have been made in this field, which led to growing expectations that fully autonomous vehicles (FAVs) will reach the market within the next few decades. However, in order to make this technology a kind of standard, it is necessary that the passengers trust the AVs’ safety and reliability. The objective is to reach a high-enough level of trust to let the user spend his or her time on non-driving-related tasks. For this reason, when referring to AVs trust is one of the main human-machine interaction issues.