Three economic impact studies came out today, all from the Washington Economic Group (all reported on at Cup Scene Daily). They found that Nascar tracks continue to contribute significantly to national, state, and local economies. Martinsville Speedway (in Virginia) contributes $174 million in economic impact and 2,824 permanent jobs with two race weekends a year. Richmond International Raceway (Virginia) contributes $467 million in economic impact and 7,700 permanent jobs with two race weekends a year. Darlington Raceway (in South Carolina) contributes $54 million in economic impact and 874 jobs with one race weekend a year.