Thank the Lord you're okay!! Your car can be replaced, but you definitely can't! I'm so sorry no one stopped to make sure you were okay. I had a similar experience in upstate New York before we moved to Florida. I was driving our Jeep CJ7 alone coming home from work, it was dark and I hit a patch of "black ice" and I also started sliding wirth no control of the Jeep. It was terrifying!! I finally stopped, facing the complete opposite direction I was going. It was amazing I wasn't killed by oncoming cars or hitting a tree. I hated driving in the snow after that. It took a little while before I could get past it and could drive in the snow/ice again. The important thing is you're okay!!