A system for authorizing temporary access and operation of a vehicle via a mobile computing device, the system includes a processor and a memory device. The system also includes a SRWC module configured to communicate with the mobile computing device; and a CNG module being in communication with the SRWC module, the CNG module includes a NAD, configured to communicate with one or more remote entities over a wireless carrier system; a GPS module, configured to generate vehicle position information and communicate that position data to the one or more remote entities; a CGM, configured to monitor and control incoming communications from the SRWC module, NAD, and GPS module. The CGM further configured to establish communications across a CAN; and a CMS, configured to encrypt the communications established by CGM as well as store the communications in the memory device.