On a lighter note, when I did the LiveStrong Challenge in Philly this summer, there was a group of kids standing on the side of the road. They were dressed in super hero costumes like Spiderman, Batman, etc. and cheering for the riders. I rode over and gave a high five to a few as I rode past. However, I wasn't going that fast (maybe 15 mph?). They could also see me coming with my hand out, so unlike the NYC video, no one was surprised.