Introducing the amazing new LineChaserz! Simply draw a line with a black marker (incleded) and the Line Chaserz vehicle will follow it! The secret is the patented sensor technology that allows its optical sensors to follow the track. For the first time kids can have fun and create their own tracks! High tech sensors will track the line, and the cars follow it wherever it goes. You can draw straight lines, curvy lines, or twisty lines, and the Line Chaserz will follow wherever you lead them. Make it turn, spiral, go under bridges or cross intersections. Use the pre-printed & laminated mats and cut-outs from four different themes, or flip the mats over and create your own world. Then when you are done, just erase the lines (eraser included) and start all over again. How tight can you turn? How fast can you go? Will you crash and burn? You draw the track - you"re in control! Click Here for video: http://www.xmworks.com/video/lc01-320.wmv Please specify desired theme when ordering; Street, Mars, Rescue or Jungle Includes: One (1) Line Chaserz­ vehicle Erasable black marker Eraser Six themed pre-cut pop-ups Large two-sided erasable board Vehicle requires 2 AAA batteries (not included) For ages 3+ Racing board measures 28-1/2 x 20 Cars measure 4 x 1-3/4