Speedometer Leather Jacket?

[Jimustanguitar]

http://makeprojects.com/Project/Speed-Vest/1344/1#.UCJwJE1lScw

If I had more time to play, I think this would be pretty cool on a motorcycle.

[Rikugun]

An interesting idea. It may be more impactfull (bad choice of word!?) if you could see where it reads "My Speed Is". Otherwise it just looks like a random lit numeral on one's back. It may even cause target fixation as motorists following contemplate the meaning as they get closer, and closer, and closer...... ???  ::)  :D

[Re-Vision]

You would need at least three digits for a motorcycle which would make them too small to be readable by the driver about to run over you.    BDC

[Rick G]

Since I spend considerable riding time above the posted, I really would not want to advertise my velocity!!

[Jimustanguitar]

I really would not want to advertise my velocity!!

You need to think of it more like the high scores on frogger :) The winner has the highest number.