I think this is possible...not sure. Can an app declare a certain voice command compatible with Google App that would perform an action within said app? I wonder if it would be possible to make Autovoice with a Google App compatibility to say "OK Google....start Autovoice" and have Autovoice Continuous turn on. Reason: Google Now integration does not work in situations where the voice command prompt is 'hidden'-ish...like in Maps. But if I could say "OK Google....start Autovoice" then it wouldn't even matter. Currently, I have to take my eyes off the road and touch a button overlay scene to toggle AVC.