I recently got a Lumia 925 and while searching for tips and tricks i came across this one guy telling how to integrate WP8.1 assistant, Cortana, with the B&M system. All you need to do is create a contact with "Cortana" as the name and any random phone number(long stream of 0's in my case) and copy this into the B&M phone book. Never before has any of my or any phone read out messages in my car but it happened yesterday!! And it even asked me to reply using voice recognition directly! I also read Cortana reads out Navigation directions through the B&M system, but i haven't tried that out yet. Maybe in a couple of days!