PRM booklet maybe not included from september 2013
This model represents among Leonardo da Vinci's numerous interesting designs. It's been called Leonardo's automobile" but present studies ponder over it one of the most significant main robots ever sold. The device is drawn on folio 812/r/ linked to the Codex Atlanticus along with other products. The robot's engine is hidden internally: a spring held fast by a stopping procedure trasmits movement towards gears that move the tires in edges."