$17.95 W5739 This amazing little sports car will follow the twists and turns on a track you draw! While it looks like magic, it's really an exclusive patented technology. The car has optical sensors that read any bold black line drawn on a white background. Comes with an official marker but you can use any marker or crayon. Children are highly motivated to keep their race car moving and so they are highly motivated to keep drawing tracks! A truly amazing tool for working on pencil control.