With the Doodle Track car, you don’t need to assemble or create race tracks. Just plot and create your own course using a black marker. This car has optical sensors that enable it to follow any black line, so the track of your dreams is just a doodle away! You can also go to their website and design tracks to print or print some pre-designed ones so you need only lay them and off your car will go. Ages 4 & up