Yes, there's must've been (viewer) records broken. I read of people watching NASCAR here's in the Netherlands who have never watched it and now tuned in simply for the reason that its the first of any form of motorsport going again.
Also got to see my favorite NASCAR driver win so happy days.
Wont be able to tune in this Wednesday due to the starting time with them running it as a nightrace pretty much. It starts at like 2 AM for us. Thats simply too late for me even considering that this Thursday is a National holiday.
Also, about Iracing. I watched most of those races but seeing North Wilkesboro, the track I've read so much about, raced by real drivers (albeit virtually) was just amazing.