What weighs as much as a hpuse and has the power of 36 horses, the Cobra Coal Snake, using the power from prototype train design MARS was able to give a man the strength of 10 men and and endruance of steel. Orgianlly designed to dig the foundations for Cobra bases and to mine for coal and gold, Cobra Comander saw the potenital to use this walking powerhouses to fight GI Joe and cause mass destruction across the world. Each Coal Snake is has enough coal to for 2 hours of operation and with an expandable coal pack up to 6 hours the coal runs out most Snake Troopes drop an explosive in the furance and run to keep the Joes from getting a their hands on this weapon.