It would be nice to include some context, like was driver on road or pedestrian walkway, were they wearing a helmet, how fast and safely they were driving...

Unicycling is nothing extraordinary that would deserve prize, pizza delivery guys do that all the time. I live in busy tourist city and I am very tired of inconsiderate unicycling drivers!

Different reaction from men can be explained in what would follow in case of crash. Men get far less help when injured. And if driver gets injured, men are expected to step up and provide help!