https://m.nascar.com/news-media/2018/02/01/nascar-new-2018-inspection-process/
Daytona 500 tv viewership hit a new low, just 4.4million viewers this year https://www.jayski.com/2021/02/17/daytona-500-tv-ratings-2/ this is the first time since Daytona 500 has been live telecast, which was 1979 on CBS, that viewership has been below 7 million people which happened last year. Rain delay obviously didn't help and restarting the race after 9pm probably wasn't a smart idea either. This downward trend keeps up I can see a time when there won't be any Nascar races on free ota broadcast channels.