I am a truck driver by trade and drive around the city day in day out, and as a result have seen many wacky, crazy things. One of the most memorable was waiting at a light at a really busy intersection when an elderly woman opposite pulled out into her opposite lane, proceeded to amble along the wrong lane through the intersection (against the light and in a slightly wavy line) eventually pulling back over and continuing along her way. You could see the look of disbelief on many peoples faces, having been witness to this event. It was a twilight zone moment. I'm so glad my Grannie doesn't drive anymore.
Chargerfanch's experience with the Vespa strikes close to home as my personal vehicle is a 400 CC Yamaha motorcycle. Remeber kids, helmets are cool. I've had a few experiences on that also, but using my super powers, I naturally escaped unharmed.