The hot wheels track builder system offers the ultimate track experience for boys by allowing them to design, create and customize their very own track challenges. Using a variety of stunts, layouts and essential pieces that work together or connect to existing sets, boys can be the master of their own track. This two speed motorized booster adds major velocity to their customized track set! If you can dream it, you can build it with track builder! Ages 4 and older. Part of the hot wheels track builder system, combines with existing track sets that let kids design, create and customize their own race and stunt challenges. Motorized power booster with two different speeds. Test your skills and rev up the fun. If you can dream it, you can build it with track builder! Features 1st in car class hot wheels have been boys favorite push around and racing die casts for over 45 years. Widely popular with both kids and collectors, the brand continues to blaze new trails and respond to innovative trends. Pro play racecar drivers know every second counts. Now kids get to enhance their performance like the pros to improve their timing and experience the thrill of racing at ultimate, amped up velocity. If they can dream it, they can build it boys love being in creative control and constructing their ideal courses. Part of an interchangeable system of pieces that work together, this track builder electronic accessory enhances and reinforces open ended creative play. Companion play since the cool pieces of the hot wheels track builder system can be used together, boys can combine sets and stunts with their friends for more hours of racing, competitive and collaborative fun. Whats in the box? Features bull motorized power booster with two different speeds bull connects easily to hot wheelsreg tracks bull test your skills and rev up the fun