The Hell's Belles Pinewood Derby and Silent Art Auction is held each year in San Francisco. Young and old register to do battle on the racetrack, with each contestant designing and contructing their derby car. Prizes are awarded for both Race Car and Show Car divisions.
The 7th annual event took place on Saturday, November 3, 2012 at 941 Geary. Proceeds from the Silent Art Auction go to the Bay Area Women's and Children's Center.
I've donated art four years in a row, beginning from 2009 all through this year's event.