Half a croissant, on a plate, with a sign in front of it saying '50c'
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Bumper-Sticker eInk Panel

Bring bumper stickers into the new millenium.
  (+5, -6)
(+5, -6)
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A small panel of eInk (electronic ink, see link) built into the rear end of every vehicle could be used to display witty messages, or anti-road rage messages to the vehicles behind you.

This way your bumper stickers will never be dated, faded reminders of yesteryear and you can collect advertising revenue if you wish to rent the space out to other parties.

UnaBubba, May 23 2001

Color Changing Car http://www.halfbake...or_20Changing_20Car
If you painted your car with eInk... [st3f, May 23 2001, last modified Oct 05 2004]

gyricon media http://www.gyriconmedia.com
by xerox, of course... [mihali, May 23 2001, last modified Oct 05 2004]

Variable albedo roof coating http://www.halfbake...o_20roof_20covering
..but VAR coating is heat-activated rather than electronic. [Dog Ed, May 23 2001, last modified Oct 05 2004]

[link]






       Isn't this just like all those 'LED message panel' ideas, and the 'Personalised bumper sticker'? Or is that the point?
angel, May 23 2001
  

       Yep, all rolled into one, and provided as original equipment on every car. It's the unnatural outgrowth(what at 1/2B isn't?) of all of those things in one convenient location, shoppers.   

       This is not some crappy home handyman job you pick up from Bob's SupaCheep Country 4x4 Bunker, this is the aerodynamically perfect, 7 cupholder version, which no car should be without. You can even write poetry for the benefit of the occupants of vehicles behind you in a traffic jam!
UnaBubba, May 23 2001
  

       Thanks degroof, just what we need to bring this to fruition.
UnaBubba, May 23 2001
  

       *Now* it's worth a pastry, if only to encourage those eInk guys.
angel, May 23 2001
  

       Also note that eInk is similar to the variable-albedo roof coating.
Dog Ed, May 24 2001
  

       The VAR coating could be interesting if you had another car hot on your tail...
UnaBubba, May 24 2001
  
      
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