<VV> Bumper Sticker seen - No vair

[Sethracer at aol.com]

Very few bumper stickers really make you think. They are intended to  
quickly communicate an opinion or a challenge to the following car's driver  or 
occupant. But I saw one yesterday that, in order to understand it, you had to 
 have a grasp (however tenuous) of some physics. 
This sticker was white lettering on a bright red background. It read:
 
 "If this sticker looks BLUE to you, you are driving too fast".  
 
Then a note reading "American Physical Society".  Okay it took me a  moment 
to kind of figure out what it meant. Think red shift and blue  shift. Or 
just look it up. Then you can chuckle. 
 
I hope you are enjoying a nice holiday today. - Seth  Emerson