Dwarf tank

The Special Purpose Annihilating Machine was designed by King Yrgna Trohs and Manfred Thickbeard in 1332 -The tank was to Dwarves as horses were to men; these could push, pull, shunt and transport almost anything if needed. The Ironsmiths at Orkosan began mass-production of these tanks for defense of major Dwarf Outposts in Morcia. Despite being a fast, mobile transport, the tanks are chiefly made of stone and heavier materials which provide a trade-off of speed and security. 

As a counterpart to the Wonderous Dwarven Ruckus Causer (Dwarven Trebuchet) the vehicle was intended to be used as a defensive instrument rather than a siege platform.