Grassroots Motorsports
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Grassroots Motorsports (GRM) is a periodical devoted to low-cost, amateur motorsports, including road racing, autocross and rallying.
The parent company, Motorsport Marketing, Inc., based in Ormond Beach, FL, holds an annual competition, "the GRM Challenge," wherein contestants' entries cannot cost more than the year in dollars (i.e., $2005 in 2005). While primarily focusing on how to build a race car and participate in motorsports events, the magazine also provides coverage of amateur motorsports in the United States, and is the official publication of the National Auto Sport Association.