One day while driving over the mountains, I was in the right lane on a double lane highway with a big ditch seperating the oncoming traffic.

Was coming up the crest of a hill, and just as I got over the top, some idiot going the wrong way passed by me in the left lane. It happened so quick I didnt really register what happened until they already passed me, had I been in the left lane, I never would have had the time to react and that would have been a head on collision at 120kph. I doubt I would have survived that.