[Attention Surplus Disorder]

I wouldn’t put one of those on my car. I need it to work. YMMV.

[NewJerseyJoe]

I put it on a blank magnetic bumper sticker, which I purchased from here. I can move/remove it any time I want -- I usually take it off when I park the car. I don't need to do so in Vernon because, other than the occasional kook like the one I described, Vernon is solid red.