I was stopped at a light, and I as I continued my trip after the green. I had put the car in auto pilot. As I approached the curve there deer to my left that got my attention. The vehicle didn't follow the road, nor did it announce with any warnings, or lane assists that the vehicle was departing the lane. Impact was made into a broken guard rail. Guard Rail impaled the vehcile from the left side into the cabin impacting my left leg causing serious injuries.