I backed out of driveway towards the south to head north on public way. Vehicle immediately started accelerating backwards (south) without assistance, quickly getting out of control. No amount of pressure on my part would make the brakes work and there was no control of the steering. The vehicle was no longer under my control and crashed backwards into a large tree which held it from crashing farther, and a small tree on the side which held it from rolling down into a brook. The vehicle is available for inspection upon request and I would prefer that it be inspected. No vehicles or pedestrians were in the street when the vehicle lost all control without human assistance. The passenger is front passenger seat was taken to ER and has since been seeing a doctor. The problem has not been reproduced or confirmed by a dealer or other service center. The police were at scene of accident right after it occurred. No lights, messages, or other symptoms gave any warning before the vehicle started racing and immediately went out of control with no control over speed, brakes or steering The consumer provided photos and police report.