I' ve made a scale model of semi-trailer truck with a trailer. It's in 1:60 scale, so wouldn't look out of place in a minifigure scale Lego City. But it is remotely controlled.
drive (truck RWD) - L motor
steering (with right geometry) - Servo motor
remotely openable trailer's cargo door - M motor
Everything is controlled remotely using SBrick, powered by standard 8881 battery box.
Internals of the trailer, door opening mechanism, battery box and sbrick were packed here:
Please watch the video to see this machine in action and for more details.
Feel free to share your thoughts.
I hope you liked this model.