Gary Crocker was cycling around San Diego, getting his daily dose of Southern California road rage harassment. After talking with other cyclists about it, he and his friends turned that talk into action by launching the "Million Car Challenge" to get the word out that bikes belong on the road. They're printing up stickers that will be available December 15 to help spread the word.
Gary realizes this isn't compliant with the "Bikes Allowed Full Lane" rectangular signs for the proposed next edition of the Manual of Uniform Traffic Control Devices, but nobody except traffic engineers care about those details. It's just a sticker and it gets the point across.
December 15. Get one as a gift for the cyclist in your life.