Rockwell Automation sponsored the No. 21 car during its first three seasons in the NASCAR Busch Series. Mike Dillon drove the car that first season in 2000 and for the first six races in 2001. Six more drivers raced for the team during the remainder of the 2001 season and one, Jeff Purvis, took it to victory lane on July 28 at Pikes Peak International Raceway for the team's first win. Jeff Green would score two more victories with the team in 2002. In three seasons, the No. 21 Rockwell Automation team earned three victories, 13 top-5 and 33 top-10 finishes.