I was driving very slowly in a long line of traffic due to a sudden downpour of hail, ice pellets, and frozen rain which blanketed the road in white. Suddenly, without warning, my 2016 Subaru Forester accelerated and veered to the right and into a grove of trees doing extensive damage to the front end. The vehicle was totaled by my insurance company. I suspect that there was sudden acceleration and because of the icy road conditions my car left the road instead of plowing into the car ahead of me. The airbags didn't go off and I wasn't hurt at all but the entire front end was beyond repair.