I am glad to hear you were not injured. I had a scary experience with a bottle-type hydraulic jack that simply fell over to the side while it was holding up the car. Luckily, I knew not to get under the car in that condition. That is when I bought a small floor jack and jack stands that I carry in the truck along with an additional full-sized spare. I have never used the scissor jack that came with my car, although I still carry it in case I need it.