SD Toyz brings you the coolest pull-back engine racer ever with Marble Racers light-up pull-back racing cars!  Marble Racers utilize Motion Activated LED lights to bring the coolest blink and flicker light action to your child's racing car playtime.  Cars feature an interior marble with the motion-activated LED light inside - give it a shake and the red, blue, green and purple lights flicker and flash as the marble spins!​