Vehicle Sharing System Supporting Nested Vehicle Sharing Within A Loan Period For A Primary Vehicle Borrower

A system and method are described for managing nested sharing of vehicles. A shared vehicle server registers, in a shared vehicle database, a primary reservation by a primary borrower for a shared vehicle, that specifies a primary time period. The server receives an indication that the shared vehicle is to be made available for nested sharing during a portion of the primary time period. The server creates a nested sharing availability record, for the shared vehicle, that specifies a sub-period of the primary time period. The shared vehicle server matches the nested sharing availability record to a shared vehicle request for a secondary borrower. The shared vehicle server registers, in the vehicle database, a secondary reservation by the secondary borrower for the shared vehicle that specifies a secondary time period within the sub-period. The server tracks status of the shared vehicle during the secondary time period.