When I pulled up at home and parked the vehicle, I pressed the brake pedal, stopping the vehicle, and then pressed the Park button and took my foot off the brake. The vehicle was not in park and rolled forward hitting my trailer with two Jet Skis on it in my driveway damaging the front of my vehicle, and one of the 2 Jet Skis. This is the first time this has happened, and there was no warning at all. Luckily it was in my driveway with no one around. If it had happened in a store parking lot or on a street, it could injure or kill someone easily.