Hi Ronald, Ronald W. Hongsermeier wrote: > Please excuse my presumption that the "tadpole" moniker followed the > biological model, albeit with wheels! It's been a long time since I've > actually seen any pollywogs-- maybe I'm mistaken in remembering them > as tail"fin"-driven. Seeing a trike setup like this, the first association that props up in the head is "tadpole"... At least, if you show some good will, you could image two gills behind its ears used for steering. The question if these gills are really there, you should ask a child with a fishing net. Dr. Bonné