1. A system for a vehicle, comprising: a user identification subsystem operable to detect individuals proximate to the vehicle; an image display subsystem operable to generate output for display on an image surface on a vehicle, viewable from outside the vehicle, based on detection of an individual proximate to the vehicle; the user identification subsystem operable to identify the individual as an authenticated vehicle user or a non-authenticated individual; and the image display subsystem operable to display an image of an individual proximate to the vehicle on the image surface.