How can one modify the track mini map which is displayed on screen during a race? I can't find any texture files other than the ones used in the menus, and there doesn't appear to be anything related in the texture folders of for a specific level type (i.e. data/art/levels/forest/textures/). Tried looking around in the example mod with bagedit but couldn't find anything there either. Not really sure what else to try.
Edit: Looks like the mini map is drawn from AI route data.