AVAILABLE NOW AT RETAILERS NEAR YOU. The original Head Poppin’ Racers, crash ‘em and their heads pop off. One of my favorite toy companies around has just launched a new product that your kids are going to go nuts over! SD Toyz, a family owned and operated company that specializes in creating smart & distinctive toys, announced this month their new line of Knuckle-Headz™ Head Poppin’ Racers which are now available at specialty toy stores, and major retailers across the country. This innovative new vehicle line combines Smash-up Derby™ with Rock ‘Em, Sock ‘Em Robots® for a unique new vehicle play pattern.  Fueled by a powerful pull-back motor, Knuckle-Headz™ simulate…