Please elaborate. Having more detail is always a good thing. Specifically: More detail more about unused menus (how to trigger them), cars, and tracks.
There are unused track ids found in the game:(2006) NFS WII, (2007) NFS WII, (2008) NFS WII,(2009) NFS WII,(2010) NFS WII. Track Id 2000,2001, 2004 and 2005are missing but they can be found in prototype builds.
Track ids 2017 to 2022 just copies from 2006 and id (7000)MW2 and (7200)MW2 FE just a leftover from Need for Speed: Undercover.