Jeff Shafer (defending SCCA Runoffs P2 champion 2016 & 2017) has entered a 2-car team in this year's 25 Hours of Thunderhill, and is live streaming their activities, starting about 4 hours ago. You can catch them on their YouTube Channel. Lunch hour ends in about 15 minutes and I expect they will start turning more practice laps, and then qualifying later this afternoon.
https://www.youtube.com/watch?v=EWaTDMOaCxs