[USMA:46543] "Go Metric" bumper sticker; centimeters

[Harry Wyeth]

It has been years since I have seen a "Go Metric" bumper sticker,  but 
there was one on a silver Subaru with a ski rack driving downhill on 
I-80 in California today.  Could it belong to one of our readers?

Aren't these bumper stickers sold by the USMA?
On centimeters: They are really useful for measuring ski lengths and 
bicycle tube lengths.  No one refers to "1700 mm" skis or a "490 mm" 
seat tube on a bicycle.

HARRY WYETH