## 1 Introduction
As representatives of new mobilityservices, they have a real potential to meet the requirements for sustainable development and to mitigate the negative environmental impacts of transportation [7; 8; 9]. For this reason, car-sharing services are extensively studied by researchers worldwide. However, while issues related to classic business-to-consumer car sharing are frequently addressed, peer-to-peer services are described as less popular [10]. Analyzing the literature on peer-to-peer car sharing services, several leading related topics can be found, for example, aspects related to research on the diversity of business models for peer-to-peer car sharing, motivational factors and barriers for both customers and service providers, users' behaviors and motivations, vehicle balancing issues such as station locations and vehicle movement strategies, and the economic aspects of peer-to-peer car-sharing functioning. Research shows that peer-to-peer car sharing encounters a range of challenges, including legal issues related to insurance, liability, and local regulations [1]. Furthermore, it is indicated that a key aspect in the development of peer-to-peer car sharing is the need to build trust among users, develop appropriate technology and infrastructure, and demonstrating the real impact of peer-to-peer car sharing on reducing car usage costs, such as in relation to the costs of car ownership [2; 3]. From an ecological perspective, it is emphasized that peer-to-peer car sharing can effectively reduce carbon emissions compared to private car ownership [11]. It is also noted that the peer-to-peer car-sharing model has a smaller carbon footprint than the business-to-consumer model, making it more sustainable from an environmental perspective. Additionally, policymakers should implement strategies to mitigate rebound effects and ensure that car sharing contributes positively to sustainability goals [11]. Regarding the effective reduction in GHG emissions, peer-to-peer car sharing in Amsterdam effectively reduces Greenhouse Gas (GHG) emissions by decreasing the number of privately owned vehicles in use and promoting the sharing of more energy-efficient vehicles [4]. It has also been noted that peer-to-peer car sharing fosters behavioral shifts in mobility, with users often choosing to car share for trips where public transportation is less convenient, thus complementing the existing transport system rather than competing with it. Another area of research involves investigations into changes in the mobility behavior of potential peer-to-peer car-sharing users, building trust through algorithmic reputation systems, and the motivational factors that encourage participation, including economic benefits and access to better or different cars. Analyses indicate that peer-to-peer car sharing leads to a reduction in the use of personal vehicles by owners who participate in the car-sharing network. Vehicle owners who engage in peer-to-peer car sharing are more likely to use alternative modes of transportation such as public transit, biking, or walking. Participation in peer-to-peer car sharing influences vehicle owners to alter their travel behaviors, opting for more environmentally friendly or cost-effective travel options when possible. Peer-to-peer car sharing reduces the overall mileage accumulated on personal vehicles, as owners lend out their cars to others instead of using them exclusively themselves [12]. Furthermore, algorithm-based reputation systems are effective in building trust among users of peer-to-peer car-sharing platforms [13]. Individuals participate in peer-to-peer car sharing for a variety of reasons, including economic benefits, environmental concerns, and social motivations [14]. Research has also examined motivations to use peer-to-peer car-sharing services, indicating that cost savings and the potential to earn income from underutilized assets are significant motivators for many users to engage in peer-to-peer car sharing [14].