I stopped on a slight forward facing hill, put the car into P for park so it was stationary, and turned it off. I got out, and walked around the car to open the back passenger side door to let my son out. Then after about 1 minute of being parked correctly, the car started rolling forward down the hill on its own (note that the wheels were turning so the car was not sliding). Luckily I got my son out, and then the car stopped on its own after about 30 yards (unclear if it stopped as the brakes engaged again or the hill was sot enough that it stopped on its own). This has happened twice now. Once seemed like an aberration, but twice is very scary. And the second time happened in front of a camera so we have the video available at this link - https://www.dropbox.com/S/clqgwlm6vc9jeg2/Jeep%20roll%201.11.21%201130pm%20mst.MP4?dl=0

- Steamboat Springs, CO, USA