Where Do I Sign?

My first attempt at freeway blogging took me an hour or two and about $20 in materials this morning, with this result (mine is the one in the middle):

I posted it on the overpass near the Vermont Street exit on 101 coming into San Francisco. Yes, there was already another Impeach sign there (one facing each way, in fact), but I don't think it hurts to repeat the message. And I heard about a half-dozen cars honking in the few minutes it took me to put it up, which I took as signs of support from people driving by. After posting it, I drove down to the Cesar Chavez on-ramp and got my camera ready. For having taken this shot as I was driving, I think it came out pretty well.