It's just Google Now in a standalone device, it wouldn't be tough, but I think they'd rather just put all the tools out there and let other people figure it out. I'm basically doing the same thing with my 360, but it works wherever I go and with whatever speakers I connect the phone to. My friend and I were driving around Sunday, she would request a song and I would just say "Ok Google, play Locked Out of Heaven" to my watch and it would start playing in the car.