The elderly, children, and people with disabilities are among vulnerable users who can benefit the most from the autonomous vehicles (AVs). Yet, most AV concepts discussed in the past decade, including the AutomotiveUI conferences, seem to focus on the mobility needs of younger and middle-aged drivers, who are the overeducated working population, technological enthusiasts, and above middle-class users. In that regard, the third workshop on Localization vs. Internalization aims to explore these disparities, identify the accessibility barriers and search for research approaches that can increase the accessibility opportunities of the vulnerable AV end-users. Built upon the findings from the previous workshops, which focused on diversity, inclusion and differences among cultures regarding AV-related research approaches, the purpose of the present workshop is to provide an in-depth insight into the state of global AV research and identify areas that still need to be explored to increase the AV accessibility, locally and internationally.