So, the other day, when I was on gta4, I took the elevator to the top of Rotterdam tower. When I reached the top floor, I saw a ladder (on the ledge) down to a lower floor. I tried to climb down it, but when I jumped, I overshot, and fell all the way down to the ground. My back hit a driving car, but somehow, I survived, with only a sliver of health left! I only used the health cheat and did not have anything unlocked to save my health. So I tried again (after replenishing my health). But this time, I landed on that lower level that I was talking about, and died. I have no idea how I did that, so please post some ideas!
Due to video game physics, you survived the fall because the car softened the blow, and therefore you barely survived. But then again, this is a video game. I'd say it was a lucky fall that the car happened to be there.