Amazon.com: LEGO Technic WHACK! 42072 Building Kit with Pull Back Toy Stunt Car, Popular Girls and Boys Engineering Toy for Creative Play (135 Pieces) : Toys & Games
LEGO MOC Lego Technic 42072 C-MODEL Sports Car by mildtuna2003 | Rebrickable - Build with LEGO
REVIEW] 42072: WHACK! - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
WHACK! 42072 - LEGO® Technic Sets - LEGO.com for kids
LEGO 42072 WHACK! Instructions, Technic
WHACK! 42072 | Technic™ | Buy online at the Official LEGO® Shop US