Most people can't draw a proper bicycle.

[tuxbailey]

https://www.behance.net/gallery/35437979/Velocipedia

The renderings look really cool though.

Fun facts:

Some diversities are gender driven. Nearly 90% of drawings in which the chain is attached to the front wheel (or both to the front and the rear) were made by females. On the other hand, while men generally tend to place the chain correctly, they are more keen to over-complicate the frame when they realize they are not drawing it correctly.

One of the most frequent issues for participants was not knowing exactly how to describe their job in short.

The most unintelligible drawing has also the most unintelligible handwriting. It was made by a doctor.

Example: