I for one can see the use of bluetooth for an intercom system. It'd be nice to be able to go for a ride with MickeyX and be able to say "Hey, there's someone riding up your tailpipe" or "I think that guy is going to try to turn in front of you", "Sorry I ran that yellow light, I'm going to keep going on this street." or "Oh sh*t we missed our turn." Hand signals are ok, but screaming at each other at lights takes some of the zen calm out of the riding experience.