On XXX at ~3:00 p.m., I was driving my 2025 Chevrolet Silverado 1500 High Country (VIN [XXX]) in stop-and-go highway traffic with Super Cruise engaged. The vehicle ahead was a truck towing a low, empty flatbed trailer. My truck came to a complete stop behind the trailer. While stopped, with no accelerator input from me, the vehicle accelerated forward on its own and struck the rear of the flatbed before I could intervene. My foot was not on the accelerator. It appears the forward sensors may not have detected the low, unloaded trailer as an obstacle, so when the system resumed from the stop it accelerated into it. No injuries. The other vehicle had a steel rear plate and was undamaged; damage to my truck is estimated at $3,549.68. A vehicle that accelerates on its own from a complete stop into a stationary object ahead is a serious hazard. This was low-speed property damage only, but the same failure at higher speed, or with a pedestrian, cyclist, or child ahead, could cause death. I have an infant, and the thought of this happening with my child aboard is alarming. I am concerned that low-profile or unloaded trailers may not be reliably detected by the forward sensing system — a systemic limitation, not a one-time glitch. I ask NHTSA to review whether other GM/Super Cruise vehicles have experienced unintended acceleration from a stop or failure to detect low trailers. I notified GM (Chevrolet claim #XXX) and requested the vehicle's Event Data Recorder and Super Cruise/O