Right now, on the big island of Hawaii, a tiny robot is taking on the classic Ironman challenge, that started with a 2.4-mile swim on Sunday, before a 112 miles bike ride now and then a 26.2-mile run these next many days. Well, actually, they are a trio of robots specialized in each event, and right now the cycling version is recharging batteries. But kudos No. 1 for completing the swim. Read Hawaii 24/7, Popular Mechanics and follow it on panasonic.jp.