I saw this bumper sticker in the Google parking lot:

Don't get it? It's a reference to the Defense Advanced Research Projects Agency (DARPA) challenge to build a vehicle capable of driving itself and, of course, to the Christian bumper sticker, "In case of rapture, this car will be unmanned."

(Other responses to the rapture bumper sticker are In case of rapture, can I have your car? and In case of rapture, this car will be unmanned. It will then recklessly careen into children at a school crossing -- killing all of them.)

After complimenting the owner, I found out that the sticker is sold by ThinkGeek.

Today we received a mailing from the San Francisco Democratic Party, part of which is scanned above. The only alteration I made was blanking out Keith and my address.