The popularity of car sharing as part of the urban mobility repertoire has barely increased from a niche contribution in recent decades. Although holding potential to address local issues such as congestion and air quality, but even more crucially to meet the urgent need to mitigate carbon dioxide emissions from traffic, car sharing often meets barriers stemming from local contexts, regulatory environments, and/or lack of political support or consumer awareness. In this article, we discuss the interdependencies of these barriers and provide some key elements to consider in the future when planning practical implementation, research initiatives, and policy support for car sharing in order to overcome the complex and interrelated barriers.