PRM booklet perhaps not included from september 2013
This model represents among Leonardo da Vinci's numerous interesting designs. It's been called Leonardo's vehicle" but current studies ponder over it one of many main robots ever sold. The apparatus is drawn on folio 812/r/ associated with the Codex Atlanticus along with other devices. The robot's engine is concealed internally: a spring held fast by a stopping procedure trasmits movement towards gears that move the tires in edges."