It's a very old diagram, but I thought the illustration of exactly what protected bike lanes look like, combined with those stats, was very useful. While we're at it, there's a good illustration of the height of modern cars vs the military Humvee, which has a lower hood!
This is almost certainly related to why the cost of higher education has stopped increasing, lower demand.
Lego has famously fine tolerances on their bricks, it really is precision engineering. From the comments, apparently the next step more difficult in injection molding is camera lenses, which are also injection molded.