Google Street View
A beautiful sculpture in Santa Rosa, California made out of about 340 bicycles and one tricycle.
Created by Northern California artists Mark Grieve and Ilana, ironically it is right in the vicinity of several car dealers.
As per wired.com it could be a "tribute to the way car culture has sacrificed more eco-friendly bicycle culture? A memento mori for industrial civilization? A reminder that riding your bicycle is both healthier and cheaper than driving a car?"
The artist Mark Grieve however explains that "The statement is up to the viewer and hopefully the work is an intersection of ideas, so it can keep growing with the community....... When a person brings to a piece his/her own interpretation, the piece is 'working' for the community."
More info and images in wired.com