Vehicle: Car: Tire
Fluorescent Sidewalls   (+1, -2)  [vote for, against]
To warn when scraped off on curbs

On places where the curb is positioned or shaped in a way such that cars tend to scrape against it, they are "painted black" with tire rubber. My idea is to include in tire rubber some material that reacts with friction to leave a fluorescent yellow mark on these curbs.
-- Random832, Nov 11 2006

Plenty of curbs that are "in the way" are painted with yellow reflective paint. So I would say baked.
-- Chefboyrbored, Nov 11 2006

this would be good for the kids who do nothing but pull skids down the road all day on their bikes. Make things a bit more colourful.
-- Helixthecat, Dec 02 2006

random, halfbakery