Yesterday on my way home, my rear-K alert started going. I figured it was a cheap-o detector behind me, but it started to ramp up. I slowed down and let a few cars pass (including the G35 I woulda bet had a radar detector - but no).
It was persistent, and then I saw a white car pretty far back and the intensity went way up. I figured "Oh thank goodness I didn't speed up", but as that car approached, it was a Chryser 300C. I turned off the V1 at this point and called my buddy who owns a 300C. He confirmed that they have adaptive cruise control, so I chalked it up to that and laughed about it with him.
And then as I was hanging up the phone, a Sheriff's SUV passed me on the left. And I double checked on Google, the 300C uses LIDAR for their cruise.
So I'm chalking it up to a save, and a V1 specific save because of the rear arrows.