Nice post, Allan. In addition to the individual pulling her brother and the Elliptigo, worth noting is the gentlemen on the 20" kids bike. He was riding to raise awareness about child abise. I don't know him personally, but more information on his story can be found here:
http://cycle4kids.blogspot.com/
While he made some slight modifications, 160+ miles on a 20" bike is quite the accomplishment.