Weirdest thing happened to my phone while i was driving.

Dropping my friend home really early in the morning (1.30 am) , had music playing by bluetooth and was using google maps.

We turn onto this unlit country road , and the music stops , my phone starts talking about distracted driving and why not to do it , the definition of it etc. I have never used voice controls on my phone (HTC M9) and i don't believe we even mentioned the word distracted while chatting. It talked for like a minute then everything went back to normal.

Anybody else ever had this?