Starting in 2015 this project took 4 years to complete. The final model is packed with electronics; 3 Sbricks, countless motors, and custom made Arduino-board controlling all the LEDs. All axles are suspended with spring coils on the back and leaf springs on the front, the cabin is suspended as well. Every possible function has been motorized leaving a few manual functions like the tilting cab and opening doors. VIDEO: www.youtube.com/watch?v=B1gTFgA8vho