far the most promising application, say Wolsky and Gaines, is to take ground scrap or reclaimed rubber and mix it with asphalt. The result is a pavement that lasts up to three times longer than regular asphalt. This means big savings from decreased road maintenance-for a net energy savings of about 90,000 Btullb. This use could absorb all available discarded tires. However, the authors say, the method is un- likely to be widely adopted soon. The initial cost of reclaimed rubber is relatively high....