Every once in a while, when I'm backing out of my parking spot at home, the cross traffic alert will beep even though nobody or nothing was there. I didn't really think much about it until recently my mom mentioned the neighbor that passed away about a year ago. Then I realized that he used to always stand in that area smoking. I'm just wonder if it's sensing a ghost or if it's just a technical glitch, I'm hoping for the latter. I've never had any false warnings anywhere else :/