Build v2.1.0.0 consolidates years of technical patches, most notably:
The original release content featuring the Gen 6 Cup Series cars . File: NASCAR.21.Ignition.v2.1.0.0.Incl.ALL.DLC....
Additional alternative schemes for the 2021 and 2022 seasons, including the Matt Kenseth legendary scheme. Build v2
A major update that added the Next Gen cars (Chevy Camaro, Ford Mustang, Toyota TRD Camry), updated driver rosters, and the 2022 schedule. Toyota TRD Camry)