What does it mean if you die in your dream?

I occassionally remember my dreams, most of the time I do not.  In the last few months, I've had several particularly vivid dreams.  Some a little disturbing on different levels.  I tend to dream more vividly at work, probably because I don't sleep deeply.

However, last night after spending a lovely relaxing evening at home.  An evening that included a great run, yummy dinner, long bath, productivity, watching of the olympics etc. I settled down for a good nights sleep after a busy wedding weekend.  I promptly entered dream land....

In my dream, I was a passenger in a car (not mine) driving down the Rim of the World highway.  We were singing off key to the music, laughing.  Not sure who I was with though.  When all of  a sudden we hit a patch of ice.  The car spun out of control, I screamed.  We hit the guard rail, tumbled over and then hit a tree on my side of the car.  All went dark, and I woke up a hair bit mad at my subconscious for doing such a thing to me.

So, if this means something bad is about to happen, its been awesome knowing you all.  I'm still going skiing on Monday, though.  I can't put too much stock in this dream stuff.