The scope of what constitutes grass- roots is different for everyone, but in Engine Builder's case - and we'll argue that we've got the correct meaning - a grassroots racing series is anything that is not the top professional ranks. Since most people who are involved in racing do not run in NASCAR Sprint Cup, IndyCar or NHRA-Top Fuel, we think that it is fair to say anything below these high profile professional racing series is a large group of grassroots racers who support the industry through the dollars they spend, not the sponsorships they bring or TV ratings.
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