Lego and Transformers seems like a pretty good match. The problem is that the recent movies and the cartoons take extreme liberties in the design. Usually there is no way these robots could fit into a tiny car. Since a computer can cheat and hide away a lot of the conflicting elements, the films get away with this. When you are working in Lego these conflicts need to be carefully worked out. Ralph S has created an extremely detailed Lego Optimus Prime. What separates this from all the other Lego Transformers MOCs is that this one can actually transform. The truck from is a good looking Lego MOC, even if you didn’t know what was hiding inside. Then with some careful transforming, Optimus Prime, stands tall. At 45-50cm in height, this makes the models scale at 1/22. Even better Optimus can stand on his own (although don’t sneeze around him, and don’t tell the Decepticons).
Check out this Lego Transformers Optimus Prime here: https://www.flickr.com/photos/madphysicist/19634091056/