My house shows up as a truck a few feet to the left of my parked car. If I'm stopped for a train, the railcars show as an endless line of trucks.
I was leaving for work last week, and slowly backing up when the awesome Tesla Vision "detected" a small walking animal circling my car, projecting a greyish image on the main screen. I stopped, got out... no cat, or anything else I was nealy about to run over. Got back in, continued my backing up, and again, the screen was showing an animal. My wife was nearby, and I asked he to look around my car. Nothing. Tesla Vision is so good now, it seems to be detecting ghost creatures from the void.
There was a much better story similar to this a couple years ago, with video, of a Tesla driver slowly driving around a cemetery where the screen was showing "people" walking in front of his car, or standing upright and not moving as he passed the invisible beings. As a bonus, he kept his phone camera moving to show both out the windshield, to the screen, and then panning around outside his vehicle. Ghosts, I guess.