Many years ago, I had just backed my restored 68 Camaro ragtop out of my garage. The driveway has about a 6 degree incline. The two speed slip and slide popped out of gear and started to roll backwards. I quickly put a log behind the fron tire (68 didn't have locking steering) which caused the wheel to steer towards my pickup truck on the street. I jumped in between the two vehicles now parallel and was pinned. I prevented the two from actually contacting, my jeans were torn and the truck required a quarter panel and the Camaro a door. I was on crutches for weeks. Interesting time reporting the accident to the insurance company because neith vehicle was running or even occupied. There was no one to find at fault or surcharge.
I learned it's only sheetmetal.