"Jenson Button will make his NASCAR Cup Series debut March 26 at Circuit of The Americas as part of a three-race partnership with Mobil 1 Racing, Button announced Thursday on Race Hub."
"Button will drive the No. 15 Mobil 1 Ford Mustang fielded by Rick Ware Racing at COTA, the Chicago Street Course and the Indianapolis Motor Speedway road course."
https://www.nascar.com/news-media/20...debut-at-cota/