Give kids a thrilling project with this LEGO Technic 42165 Mercedes- AMG F1 W14 E Performance Pull Back Car Toy. This car building set comes with authentic details inspired by the real car, plus a thrilling pull-back action to send the model racing as kids imagine life as a champion driver. They can also enjoy an intuitive building adventure with the LEGO Builder app, where they can zoom in and rotate models in 3D, save sets and track their progress.