A recap of some major takeaways from NASCAR’s trips to Las Vegas and Phoenix, as well as the IndyCar 2024 opener in St. Petersburg. Among the topics: Toyota’s strong showing on a critical track; the short-track rules package debate; changes for Kyle Busch and his pit crew; Rajah Caruth’s breakthrough NASCAR victory; NASCAR president Steve Phelps on the possibility of racing at Dodger Stadium; a discussion of charter systems and big salaries in IndyCar; St. Pete winner Josef Newgarden and his new professional outlook.