Love this and just had to share. I found myself smiling inside and out, though some of them hurt a bit to think about too carefully.
Then I wondered what my attempt would look, even though I ride a bike all the time.

http://www.booooooom.com/2016/05/09/bicycles-built-based-on-peoples-attempts-to-draw-them-from-memory/

Bike to Brown discussion list: http://listserv.brown.edu/archives/bike-to-brown.html

Bike to Brown website: http://biketobrown.brown.edu/