Flutterby™! : Velocipedia

Via Shadow: As it turns out, most people cannot draw a bike.

These are pulled from Velocipedia by Gianluca Gimini, who asked people to draw bikes, and eventually:

I decided my job was going to be presenting the potential and the beauty inside these sketches. I selected those that I found most interesting and genuine and diverse, then rendered them as if they were real. I became the executor of these two minute projects by people who were mainly non-designers and confirmed my suspicion: everyone, regardless his age and job, can come up with extraordinary, wild, new and at times brilliant inventions.