I donated this piece to the SFBC (San Francisco Bicycle Coalition) Winterfest 2011 Art Auction. It's happening this coming Sunday, December 4 in San Francisco. More info on the event is available here. I am a proud member of the bike coalition and encourage those of you out there that are bicyclists to join up. You get great discounts all over town and, at the same time, help make SF a more bike friendly town!