With car sharing, you do not own the car yourself, but share it with others. The owner of the car is a car sharing association. Users conclude a user contract with the non-commercial car sharing association when they register.
After that, they can book the vehicle independently around the clock. You only pay for the actual use of the vehicle. All costs are included in the fare; you do not have to refuel at your own expense, but there is a fuel card in each vehicle.