Busch, a Sprint Cup Series regular who won last year's Nationwide Series championship, confirmed today that he will not be running the full season again.
"I think I've been shot down in full-time Nationwide so that's done," Busch said. "Brad Coleman will be racing in the car in the races that I'm not and I believe we all know Matt DiBenedetto will be racing ... in the 20 car in the races that (Joey) Logano or (Denny) Hamlin aren't."
The 25-year-old Busch has run all 10 Nationwide Series races so far this year. He has three wins, seven top fives and is currently ranked second in the standings.
He is also owner of a Camping World Truck Series team and plans to compete in 15 races with the team, including today's race at Dover.