I don't know if you've met my friend Harrison, but we were inside the garage working on my friends 240. Harrison was outback on the porch changing the rear end in his AE86, without the front tires calked. The car rolled forward pinning his wrist in between the jack-stand and rear end snapping it. From inside the garage we hear screaming and run out side to find the rear end of the entire corolla (no tires were on the back) sitting on Harrisons chest. We literally lifted the car off him, and I drove him to the hospital later.