RM2k/2k3 - Is it possible for pictures to move independently of the player...

Is it possible for pictures to move independently of the player even if the pictures are off-screen? What I'm trying to do is this: I have a silhouette of a flying car. I want the transparent silhouette of the picture to move vertically along the map, along where the roads are, to give the illusion that there are cars flying above the player. I know how to make the pictures move etc (I'm an experienced RM2k3 user, and have made my own CBS and CMS, etc) but I'm not sure if it's possible to make the picture move along the map regardless of whether or not the player is in the area; that is, even if they're on the other side of the map and can't see it.