when I took an R56 for a test drive the sat nav it had looked very much like the idrive sat nav in terms of what it did. Even the scroll dial worked in a similar way to the dial on the BMW models. Didn't get a real chance to play though.
Its a real shame the R56 is so hard/impossible to change the head unit because for the price of the integrated sat nav you can get a much better after market head and sat nav, just my opinion though
