Ahh, economy, environment - where the two meet it's rarely pretty. After certain of their Ford Explorer tires were found to fall to shreds at high speed, Bridgestone/Firestone tire manufacturers had to recall 6.5 million of them. Obviously they're useless at fulfilling the purpose they were produced for. B/F can hardly abandon the tires by the old swimming hole either - 6.5 million would form a wall 50 feet high, 50 feet thick and half a mile long.* The tires need to become something else.

Here are a bunch of ways old (or new and useless) tires can be recycled:

* "How to Make 200 Million Flip-Flops", The New York Times Week in Review p. 2, Sunday, August 27 2000