An apparatus comprises processing circuitry configured to determine that a primary user equipment (UE) entered a vehicle. The processing circuitry is configured to initiates transmission of an entrance notification to a carrier network server notifying that the primary UE entered the vehicle. The processing circuitry is configured to receive an assignment message from the carrier network server. The assignment message indicates that twinning has been configured between the primary UE and the apparatus. The twinning configuration includes a transfer of assignment of a service plan corresponding to the primary UE from the primary UE to the apparatus.