Christ, the one where the car barrel roles into the couple is a bit grusome!
Have to agree with teatowel and rtbisciut though, it has nothing to do with speeding, its all about observation and driving within what you can see (i.e. being able to stop in the distance you can see). Everyone should do advanced driving courses, or at least read Roadcraft. Its comon sense when you've read it, but gives you a lot to think about.