While pulling into a parking spot of a business and approximately 6 feet from the curb, the automatic emergency brake engaged forcing my whole body forward, slamming my head on the visor/roof of the car very forcefully/painfully. I was not in traffic, I was getting ready to park. My front seat passenger slammed against her seatbelt and I had a child in the back seat who slammed forward as well. No dash indicators or seat rumbling occurred, it was just an immediate jolt/hard stop that I was not braced for. At risk of concussion or TBI.