Build, Play, and Learn With Cada. With Illustrated Step-By-Step Guidance, Children can build the vehicle brick set together and then race against each other. This process will help children develop a sense of cooperation and competition.  Officially Licensed Citroen Wrc2008; 1-20 Scale Wrc 2008 Champion. Confidently designed for realism and performance. Features Dual-Mode Control, 2.4G Remote and App Bluetooth. App Features: Remote, Gyroscope, Path Planning and Programming Control.