On 28 September, a joint workshop between the European CARTRE project and ERTRAC, the European Road Transport Research Advisory Council, took place in Brussels. During the event, CARTRE’s role in galvanising stakeholder positions on a wide range of topics related to connected and automated driving was presented. In line with CARTRE’s thematic interest groups, there were pitches and discussions on topics ranging from user acceptance to infrastructure or sustainability assessments. The workshop focused on the formulation of open questions in order to foster European Transport Research with the challenges of autonomous driving clearly in mind. Over 50 participants from different stakeholder groups, bridging industry and research organisations as well as associations, attended the event.