Be glad you lived. I saw this happen on the way to the mountains one time. Spare fell off a motor home. The guy behind him swerved into oncoming traffic, hit a car head on, his car literally did 2 rolls and landed on the wheels, barely kissed the roof on the second roll. The other car spun a few times, stopped on the shoulder against a tree. The guy in the car that swerved didn't have his seatbelt on, he was on the passenger side with his brains hanging out of his head from hitting the door pillar, it threw his wife out of the car, she was lying on the pavement dying. The woman driving the car he hit didn't have her seatbelt on either, she was literally stuffed in between the door and the steering wheel and died while I was there (the engine was on fire, I stopped to render aid and stood there with a fire extinguisher keeping the flames out while she died in front of me until the fire dept. arrived). Only upside was the other 3 people in her car had their seatbelts on and lived. Wasn't a good way to start Thanksgiving out.