Maniac: a person who has a very strong interest in a particular activity:
Dirt Track Maniacs is a business dedicated to serving the needs of passionate dirt track enthusiasts. As a Dirt Track Maniac, the owner designs, manufactures, and sells a wide range of generic and personalized items catered to fellow Dirt Track Maniacs. Whether you're a die-hard fan or just getting into the sport, Dirt Track Maniacs has something for everyone to showcase their love of dirt track racing, whether late model race cars, sprints, midgets, any dirt track car racing.