After driving around with this new feature activated I can safely say its increased the HUD's usability 10 fold. If you don't have the navigation on the HUD just shows you how fast you are going. While cool its novelty wears off pretty fast. Now with this i actually look at the HUD a lot more.
Current - 2013 N55 535xi Msport SAT
Retired - 2009 N54 335i Msport 6MT
Retired - 2000 M52TU 323i ASA Supercharged 5MT
More photos of my car here