Simply draw a line with any black crayon or thick marker and the Smart Trackerz will follow that line perfectly using its patented opti-trak technology sensors. Now you can draw your own race track or construct roads that go through your house all day long. Smart Trackerz come in 3 styles: Bulldozer, Dump Truck and Breaker. The perfect item for the construction worker inside of everyone of us. Smart Trackerz by Smart Planet! Draw your own track and watch it go!!! Patented opti-trak technology follows any marker line you draw! Batteries INCLUDED! Plus bonus set of Batteries!!! Works with any black crayon or broad marker! Fun for the whole family!  

19.95