While driving home from work a couple winters ago, the minivan to my right started spinning on the ice, so I twitched my car a fraction to the left. Just as he barely cleared my right mirror, I heard a car horn, and when I looked to my left, I could see my face reflected in the black paint of a jacked-up 4x4 diesel truck. The minivan actually managed to avoid hitting me or the retaining wall and somehow ended up pointing the right way, and I didn't touch the truck, but the step-up-bar on the truck was about the height of my car's door handle.
Coincidentally, I'd just got a brand new pair of all-season radials on the car 20 minutes earlier, while on the way home from work ; that was the only reason I was driving on roads that were slicker than greased goose-shit.