NHTSA Complaint #11531062 — 2023 TESLA MODEL 3

On July 6th, at 6:42pm, while driving 70 MPH on California Highway 152, on a clear day (88 degrees F), with no traffic around our car, the car slammed on the brakes, taking the speed from 70 MPH to 46 MPH in a period of 5 seconds (with most braking in the first couple seconds). I was using the cars' built-in Autopilot system. The car did the same thing about 2 minutes earlier, so we happened to have been recording a video of the cars operation when it happened this second time. The car did the same exact behavior on June 29th at 10:30am, on the same highway but different location. It was also a sunny day, and there were (thank goodness) no cars near us when it happened. That time, it braked so hard it triggered the ABS system.