It is one of three features that Cadillac advertises as existing, but does not. I personally find it unbelieveable that they would declare the vehicle to have A) ventilated seats, when they do nothing but make noise B) have an active noise cancellation system when there are no perceptible effects and C) a microphone icon that was supposed to be for texting and/or phone voice pass-through but can't be made to work. Additionally, they provided the vehicle with an Easy-exit system, but no way to get back into it except by manually holding the memory controls each time you get back into it; quite a step backward.
I love driving it but smart people wait for the '16