Pro: Younger fans
Its no secret that NASCAR is a business and while longtime NASCAR fans probably wish that they were pandered to from time to time, it makes more sense for NASCAR to go after the younger crowd. Not only does this move allow NASCAR to slowly become more and more acceptable to watch with the family, it will also create lifelong fans who will one day turn the race on for their family as well.
This creates a customer in NASCAR’s mind and allows them to sell the family on merchandise, various sponsors and tickets to upcoming events for life. Then there’s the fact that doing so might endear the young children to NASCAR as well and that also has the possibility of creating fans for life. Either way, becoming more family friendly is a great way to put more and more eyes on the sport, but it does with the above mentioned cost.