I was driving into a parking doing less than 10 mph trying to angle park my truck. Suddenly my truck accelerated violently hitting another vehicle in the parking lot in the right rear and turning it around. Was hitting the brakes to no avail. Truck continued to accelerate and I aimed for a sign support pole while depressing the brakes as hard as I could. Truck hit the pole and the air bag deployed. Front of my truck was caved in and the truck was ruled unrepairable by my insurance company. I could have been badly injured or killed but thankfully sign support pole stopped me. Have a police report but was unable to scan it to my PC so I said there was no report.