In 2021 RLL again expanded to three cars, with Graham Rahal and Takuma Sato driving two full time entries while Santino Ferrucci would drive a third car on a part time basis. The car would be backed by Hyvee, a supermarket chain in the Midwestern United States. Initially Ferucci and the third car were only scheduled to run the 2021 Indianapolis 500 but after Ferucci's top ten finish in the 500 Hyvee gave additional sponsorship for the car to run at Detroit, Mid Ohio, and Nashville with Ferucci behind the wheel at all four races. After the Nashville round the team announced the third car would be run at the Big Machine Spiked Coolers Grand Prix on the IMS road course by Danish Formula 2 and current Alpine F1 Academy driver Christian Lundgaard in place of Ferrucci. During the season Ferrucci, Oliver Askew, and Lundgaard would all test the third car in shootout style tests to determine who would get the full time drive in the third car in 2022.