I have looked into this page and I can confirm that they use one kind of Brightcove player as their backend. However, this isn't something that can be determined solely by the URL, which means that the page's content has to be examined to find whether it contains a Brightcove embed and extract the relevant information from it.That's not something that could be applied globally because it would slow down every post that contains a URL, thus a special entry would have to be made for the Nascar site.
I will not be able to add this new site in the foreseeable future. If you want to sponsor its development and addition to this extension, you can send me a private message and I will walk you through it.