Tracer Racers utilize Light Trail Technologyas they blaze streaks of light on Skullduggery patented Glow-in-the-Dark track. Each Tracer Racerbeams down purple light rays from its undercarriage onto track specially engineered to emit glow remnants long after the racer has passed. One of four new Tracer Racerdrag racing sets, and a dimly lit room, is all that is needed to set the darkness ablaze.