CEM debuted at the 2004 Coca-Cola 600 with Kevin Lepage driving, finishing 43rd after suffering overheating failures.
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Mike Garvey drove for the team in 2006, but after 4 finishes of 38th or worse, sponsor Marathon Oil left the team for Petty Enterprises.
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During the 2006 season, Garvey made four Nextel Cup starts for Competitive Edge Motorsports owned by Joe Auer.