This might surprise you, but yes, the two racing organizations are friendly with each other. In fact, the Indianapolis Motor Speedway merges these two worlds together. During the same weekend as the Brickyard 400, IndyCar will also host an event — on the regular course, not the road one like NASCAR. 2022 will be year two of the NASCAR-IndyCar mashup after doing a joint weekend for the first time in 2020.