Velocipedia on Behance

This website is about a guy who asked people to sketch a bicycle out of their head and because many people get it really wrong, he created a collection and created realistic renderings of some of the "best" ones. It is really funny to look at since some people really think out of their head that this is what a bicycle looks like.

It is also a more widely known test you can do on people, to see if they have technical understanding.

Also check out this, it has better pictures: https://www.behance.net/gallery/77793195/Velocipedia-IRL