Yeah I don't have a SBD subscription but summarizing from the NASCAR Reddit thread:
- This would involve the sale of NASCAR, SMI, and ISC as a single entity for $3-5B
- Comcast is rumored to be interested
- NASCAR kind of knows they are in a tough spot after their TV contract expires in 2022
I still don't know where IMSA, Road Atlanta, and Sebring ownership fits into this whole structure. However, I would guess that it was bought and is still solely owned by Jim France. No one is really positive what the NASCAR ownership structure actually looks like. There are a lot of rumors that certain members of the family named "Brian" have sold out.
Anyways, this would drastically shake up the Motorsports picture in the United States if it were to happen and as far as M&A deals go, it makes a lot of sense for all three entities in play at this point in time. NASCAR needs a shakeup and this would certainly be that.