This is cool. This person did something similar on a bike: http://rideallofsf.tumblr.com/ http://rideallofsf.tumblr.com/ (go back a page or so, the project fini

This is cool. This person did something similar on a bike: http://rideallofsf.tumblr.com/ http://rideallofsf.tumblr.com/ (go back a page or so, the project finished a while ago and it has since devolved into Strava drawings)