I found it in e53 also, in the hidden features thread. here is the post: http://www.xoutpost.com/319160-post158.html

Here is the thread (some neat stuff in here - e70 has a similar thread but way less comprehensive. Don't know how much of this stuff carries over to e70 but would be awesome if someone wanted to do a full e70 update! I'm still way too much the newbie to even approach such a task but it is a fun idea): {oh, BTW, this is a 41 page thread}: http://www.xoutpost.com/bmw-sav-foru...es-e53-x5.html

A few people posted summarized feature lists, here is one of them: http://www.xoutpost.com/324024-post183.html