Lego Technic Land Rover Series I working RC model

pictures: Model of the Land Rover Series 1, the first Land Rover. I tried to make a realistic chassis and body, performance was secondary. Everything works remotely. Scale is 1to9. This is unable to climb truck trial tracks, that part is the video is just an off road example. Specifications: Speed with high gear: 1: 0,5 km/h 2: 0,8 km/h 3: 1,25 km/h 4: 1,67 km/h Length: 387 mm Width: 192 mm Height: 198 mm