Steering Wheel microphone button for Google Now

[Guticb1]

I remember getting something in the mail about being able to use the voice button on the steering wheel for Siri and S Voice on a Galaxy S6, but is there a way to have it trigger a voice search on my non-Samsung Android phone with that button. I've got a Nexus 6 if it makes any difference.

Has anyone found a way to do that? Because tbh VW's voice commands are garbage. -_-

 

[test2]

I hear this will be an option with Android Auto. But that's for 2016+