Car was put into reverse to perform a T turn to drive in the opposite direction on 1/14. The "D" button was depressed to place the car into Drive. The car quickly accelerated backwards and crashed into the mailbox. Service Advisor at the David McDavid Honda Dealership was contacted yesterday regarding the issue but no response has been received yet. It is unknown if the backup camera was visible since attempts were being made to try to stop the car. Not much time was allowed.