The tricycle reminds me very much of a bike Dawesman posted recently. It is an ancient Japanese machine that is still used to haul timber around a lumber yard in Tokyo. I found it fascinating. Say a carpenter comes in and wants some 6x6; you send the kid out on the trike to fetch it. In five minutes it's on the truck-bed and paid for. Every boat yard should have one. I sure could have used one when I was sailing back in the Cretaceous ... lugging sails and gear from the parking lot to the jetty. Cool and useful.