Product Description

The Hot Wheels Track Builder System gives you the tools to create the track of your dreams. Now you can stack power boosters to add insane speed at two levels when competing with friends. The Power Booster Kit includes over 40 pieces plus 8 launching rockets?? two boosters so you can boost your crash?? your loops and head-to-head races! There are four set builds right out of the box. Connect to other Track Builder sets and reconfigure to hack the track with the Builder's Guide (included). Features a "ay-able" package that allows you to create your own game of ski ball or construct an epic loop. Comes with one Hot Wheels car. Each sold separately?? subject to availability. Colors and decorations may vary. Batteries not included. Requires 4 D-batteries. For ages 5 and up.

http://www.amazon.com/gp/product/B01MA27XFLLe