https://www.autoblog.com/2018/03/08/goodyear-moss-filled-tire/
"Goodyear has unveiled a new concept tire at the Geneva Motor Show that ticks several boxes of the automobile of the future — it's touted as a sustainable urban mobility solution that employs artificial intelligence, increases safety and generates its own electricity. Also, it's filled with living moss that can help clean the air. That's a lot to ask of a tire!"