A year ago or so I read a webpage about car tires. The guy claimed that some high ranked Michelin guy said in the 80s "we can make infinite tires right now, why would we do that ?". :)
Still, I believe it. A ten year, 200,000 mile tire sounds like a pretty reachable goal if you don't use rubber.
Mass produced, and economies of scale take over, and a resin with carbon fiber, or some other high performance composite gets cheaper, and ultra durable donuts get popped onto car rims around the world.