How about this: If the exact same vehicle appears in another movie, we put a link named like the movie under the photo. Clicking on the link will take you to the page of that car in that other movie, for example:

Under http://www.imcdb.org/vehicle_53115-Volkswagen-Station-Wagon-Typ-2-T2-1978.html the link should be in the following way:

Also appears in You, Me and Dupree