A can holder for supporting a smaller can on top of a larger can during shipping in a carton. The in-vehicle computing system determines a position of the feature of the face of the driver relative to a mirror of the vehicle based on configuration data of the vehicle and the captured image. A third fitting portion 32 concentric with the first fitting portion 18 is provided to a pressing member 31 applying a precompression to the annular elastic member 23 in cooperation with the supporting member 22. Stud locator markings define positions for placement, on the respective plate, of stud ends to be mounted against the respective bottom or top plate.