I now have a Nokia Lumia 900. My previous phone was Nokia E7-00. The Nokia Drive in that phone was totally awesome. When I was driving and listening to music and if the voice guidance was to give me some instructions, the music volume was lowered automatically and I could clearly hear the sound of the guidance. But in Lumia 900.. it is not so good. I still use Nokia Drive for Lumia and when the I have switched on music plus the Navigation, the music volume stays the same and I cannot hear what the voice guidance is asking me to do. I have to go back, pause the music and then listen to what it is telling me.... doesn't it sound like a lot of work to do while driving while keeping your hands and eyes on the road?
I would like to suggest that Nokia comes up with an update for this please.
The N900's Sygic map application has the same feature. I really miss it now that I'm using Nokia Maps on the Lumia 900. I don't miss having to pay for every map and not being able to use the maps offline. Nokia, get after it.