Unbelievable as it sounds, rather than work with an existing supplier such as Garmin, TomTom or Navteq, McLaren have created their own system from scratch.
I asked whether it was just the GUI that was bespoke, with a third party 'engine' embedded within but to my horror and astoundment I was told that the whole system has been coded from scratch...
Now that's a mammoth task, especially when you consider that almost every system you see these days is mature and sophisticated after having been enhanced over many years.
McLaren are for some reason trying to reinvent the wheel!
(This must be because their aspirations are to have complete control of all components of their products - Ron's way)
IMHO It's therefore inevitable that Iris Nav v1 will be more basic than rival systems, and probably more buggy too...
For me the bluetooth integration is more important, but when it comes to McNav we should prepare to be underwhelmed, at least initially!