I think the Indycar iRacing example shows that properly done virtual racing with the real drivers and liveries, and with the regular commentators, can seem quite professional:
https://youtu.be/HppJd3803n4
So hopefully the Supercars iRacing series will turn out alright as well.
https://www.supercars.com/news/champ...-goes-virtual/
https://www.supercars.com/news/champ...ackle-eseries/