IndyCar is getting greener, as Shell will be supplying the series with 100% renewable race fuel, which they tested at The Thermal Club open test on Feb 2-3. It is derived from the waste portion of sugarcane and sourced from Brazil.
https://www.indycar.com/news/2023/02/02-27-shell-fuel
Firestone’s green-banded race tires with sidewalls made from sustainable guayule rubber, which debuted at the Nashville Grand Prix last year, will be used at all 5 street races this year.
https://racer.com/2023/02/23/firesto...reet-circuits/