This has happened a few times already and has caught me by surprise. I get in the car, press on the brake, wait for the car to initialize (!!) then put the car in reverse to back out of my garage or a parking lot. Occasionally the car will halt, stop itself and display a message about preventing the car from rolling... I'm certain I pressed on the accelerator pedal slightly to start the motion backwards then most likely let the momentum of the car move it on its own. I end up half way in the lane blocking other cars and have to re-engage Reverse again. Somewhat of a safety issue. I don't see how the car can think that I am not paying attention since I am inside the car! Has anyone had this happen?