1 thread, multiple forums

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There are a few different methods, using search filters, thread prefixes, etc... that can be implemented to achieve the false perception of 1 thread living in multiple forums, but is there a specific setting within vBulletin to allow this?

Example: I administrate an automotive forum, which has sub-forums categorized by vehicle model. Each vehicle sub-forum has multiple child forums, one of which will always be a classifieds section. I would also like to have a single, site-wide classified section, which "pulls" in vehicle specific classified threads. Additionally, I would like for vehicle specific forums to pull relevant information from the site-wide classifieds.

This is a standard cross dB relationship, however there does not appear to be a standard feature in vBulletin 3.7 which allows for this.