On July 15, 2001, Michael Waltrip drove the #15 Napa car for Dale Earnhardt Inc. at Chicagoland Speedway. Michael started 39th and finished 22nd in the 2001 Tropicana 400.
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In 2010, the #15 car wasn't driven in the Sprint Cup Series. In the NASCAR Nationwide Series, Michael Arnett drove the #15.