Senders of instant messages may inspire perception by a recipient of avatars capable of being animated in order to customize or personalize communication exchanges from the sender. The first surface includes a protrusion. The at least one photo detector is configured to detect light that is emitted by the at least one light source and reflected by the body in a direction towards said surface. A wheel plate engages the spare tire and cooperates with the retention cable and the tensioning spring to maintain the spare tire in the storage position.