As I was about to pull into my driveway my accelerator did not respond to braking I was going very slow about to make a left turn , less than 10mph Just As I started the left turn the wheel became unresponsive and the accelerator did not deccelerate At the same time my control panel seemed to glitch/flash I put both feet on the brake and stood on it as the truck continued forward until it struck the mailbox The truck stopped at that point but I could still hear the rear wheels turning on the road until I put it into park