This looks like it would be marvelous fun, if it wasn’t for the constant risk of driving headlong into a lamppost. At least there’s a good chance that a couple of squishy spectators will cushion your crash, but humans don’t make very good air bags.
I hope the rider was wearing clean underwear. My mother always told me to put on clean underwear because there’s no way of telling what might happen to me. If I got into some horrible accident, she didn’t want the hospital attendants to think less of me because I was wearing last week’s underwear. Now that I think of it, I don’t think it would make very much difference if his underwear was clean or dirty. Either way, he’ll have soiled himself by the time he finishes the race.