What if your tires never wore out? Recently Goodyear introduced a concept tire that regenerates itself by inserting a pellet into the center of the tire when the treads get low. The pellet produces a chemical reaction and begins to regenerate the treads based on a substance from spider webs. If you are interested in the future of automotive technology, check out this article. 

https://www-cnet-com.cdn.ampproject.org/c/s/www.cnet.com/google-amp/videos/goodyears-concept-recharge-tire-would-never-get-a-flat/