The article presents the development of urban car-sharing systems. In recent years, we have observed substantial increase in the number of such systems implemented all over the world. The number of users has also been rapidly growing which translates into the impact car-sharing services have on transportation behaviour. Additionally, the process contributes to changes of the modal split. The analysis presented covers systems in operation in Europe, Asia and North America. The article is divided into two parts. The first one presents historical development of car-sharing systems, whereas the second, prospects for their development in 2020-2025.