In this video I’m showing you the “scene of the crime” under my Christmas tree—my Lionel O scale set after my robot vacuum decided it wanted to get involved. I came home, had trains running, had the robot vacuum running, and then I heard that unmistakable crunch. The vacuum knocked the whole consist off the rails, and it was a good reminder that if your robot vacuum is a few years old (or just dirty), those sensors can get unreliable fast. Mine wasn’t even recognizing something right in front of it, so I had to stop it and send it back home. I go over what got hit, what sparked (these lit cars get power, so yeah—sparks happen when things go sideways), and I check for damage. Luckily, the locomotive is basically a brick—die-cast and tough—so it didn’t go down easy, and the cars landed on a softer area so everything looked okay. I also throw in a quick holiday/channel update, because it’s been a busy year: layout progress stalled thanks to a custom building that collapsed in shipping, and I’m staring down a huge pool repair bill. Bottom line: don’t run a robot vacuum near a train set—especially under the tree—unless you’re sure it’s clean and behaving.