Unknown Failure causing issue. Vehicle's Engine Shutoff while traveling down the road with no warning messages. Then message says to apply breaks and push "start", but it was in the "Run" and still coasting in Drive on the road. After it slowed to about 5-10 mph, the emergency break system engaged and the vehicle went to "Park" causing the vehicle to throw me forward in the seat and objects were thrown as if I had collided with something. My wrist was injured by this, but lucky I had no passengers or my dog with me. The local dealership is looking into it, but say there is nothing wrong. Upon doing some research, I see multiple people have stated this has happened to them as well. This is a significant risk to health and safety of vehicle occupants and other vehicles that may be traveling near them when this happens. Depending on speed it occurs, the outcome could result in death. I did attempt to connect my on-board diagnostic/monitoring system and found that the manufacturer has it block so I cannot see any possible codes or sensor readings of the vehicle. Then they say nothing is wrong when you take it to them to scan. That is also unacceptable.