Ertl John Deere Mighty Trike
Big, simple, and strong--especially strong--are the three words that define  this tricycle. Its all-metal construction makes it several times the weight of many  competitors, but how many of them have a warranty that reads "Ten years or 10,000  miles"? This brute has monster-sized inflatable tires (10 inches in diameter by 3.5 inches wide  at the back, and 15 inches by almost 4 inches at the front). The frame looks strong enough  to ride through a brick wall, and the seat--also metal, and not exactly built for comfort--adjusts  infinitely along the sloped main frame. A simple hole-and-pin hitch at the back is perfect  for towing. Adult assembly is required.--Richard Farr