Great Gizmos Zoob Mobile Mini 4 Wheeler 

ZOOB is a building set with a difference - the pieces move after kids put them together. So kids can play with their ZOOB creations, instead of just looking at them.
ZOOB`s 5 different pieces snap, click and pop together in 20 different ways to form joints that rotate, limbs that extend and axles that spin, and lots more. Kids can create simple models in minutes, or get absorbed and spend hours at a time. There's no limit to what they can build: from animals to aliens, from dinosaurs to DNA.
ZOOB is based on real-life systems, so its built-in educational value encourages kids to learn, explore, and create using the most important tool of all: Their Imaginations!
The Mini 4-Wheeler is a great ZOOB Mobile starter set, or an ideal add-on to ZOOB collections that need wheels. This set includes 12 ZOOB pieces in special colours designed for building cars, wheels that can work like gears, and an instruction guide for vehicles such as a Dune Buggy, a 3-Wheeler, and a Mini Pace Car.
And because Zoob pieces snap together so many ways, this set challenges kids to create their own automotive inventions, then take them apart and rebuild them again and again.