Wind Drive
This model demonstrates how wind can be used for propulsion. Build this sail buggy as described in your assembly instructions. Watch as the wind hits the surface of the sail and propels the sail buggy forward. Experiment with moving the position of the sail and see how your model reacts!

Balloon Drive
Discover how you can drive this model using air molecules. Using a balloon, you can watch as air is released and pushes the model forward - producing the same reactive force that launches rockets into outer space.

Bending Rod Drive
This model uses the same drive motion uses in ancient times with bow and arrows or stones. This mechanical energy relies on tension, which is provided by the bending rod. After construction of the model is complete, pull it backward to establish proper and tension and then release it to watch it move forward.

Rubber Band Motor
The Rubber Band Motor is similar to the previous model in that it also relies on tension. Instead of the rod establishing tension, the rubber band is used to establish a force to drive the model.

Pullback Motor (Trike & Buggy)
This model can be built in two different ways - though it still requires the use of the pullback motor. The pullback motor consists of a gear, wound-up springs, shafts and housing over top of it. The spring is permanently connected to the housing and to a shaft over the gear. It is tensioned in the same way as winding a clock. This drive works by transferring the stored energy in the spring to the gears and then on to the wheels. Simply pull the model backward (as the name suggests) and release it to move the model(s) forward.

Vehicle with Steering
This vehicle introduces axle pivot steering to your drive models! Learn how steering works as you build your model. A double trapezoid layout allows the car to drive through curves. This element consists of an axle, a tie rod and two steering arms. Watch as you turn the steering wheel in a specific direction and the wheels follow suit.

Offroad Vehicle with Steering and Spring Suspension
Build on what you learned from the steering model, this vehicle adds a spring suspension system. Learn why this system is so important for offroad vehicles as you discover how suspension allows the wheels of this model to follow irregularities in the road. This increases passenger comfort as well as driving safety.

Offroad Vehicle with Pullback Motor
This model is the culmination of what you've learned so far using the Cars and Drives set. Use the instructions to install a pullback motor in your offroad vehicle with steering and suspension functions. This will help you test the directional stability of your model and experiment with arresting your steering capabilities. Track improvements as you tighten and/or loosen the axles. (For additional functionality, this model can also be combined with a remote control)