Since I'm going to the Rubber Tramp Rendezvous, I thought it would be good to give attendees notice—for better or worse—that I was among them. And the sign would make it easier for me to find my rig among all the other white vans.
I gave the art file to the nice people at Sign Masters in Yuma and they had it done in a few hours. It's self-adhesive vinyl. I'll remove it after RTR so I can be slightly more stealthy.
Oh, and I put the sign on a slant because it's much easier than getting it perfectly straight. Intentionally crooked looks better than just a hair off.