Rungu has the first all fat-tire bullfrog trike. The bike features three huge, soft tires allowing it to &quot;float&quot; over snow &amp; sand. Perfect for transporting surfboards across the sand or pulling stuff across the snow, it can also climb up short flights of steps with ease. Two models available, the Juggernaut: features fat 26 x 4.7-inch tires for sand &amp; snow, &amp; the Kilimanjaro: features a rear fat tire &amp; two skinnier 29 x 2.5-inch tires in the front, and is intended for use on the road or…