The NASCAR Cup Series regular-season finale ended in a walk-off win for Stewart-Haas Racing and Chase Briscoe in the Southern 500. Of course, that meant that a couple of drivers had their hearts broken at the end of the night. Of course, we had NASCAR Xfinity Series action this weekend and a little ARCA Menards Series action on dirt once again. The focus was on Darlington and that is what we are mostly going to discuss in this week’s recap. The Truck and Cup Series are both now in the postseason. We still have a little big longer to go for the Xfinity Series this regular season. Brent Crews do…