FIA, CART, F1, NASCAR. So may make specific serieses as well. I'm using the term "sports cars" very loosely. Basically, thinking of auto sports in general that have professional level drivers and international appeal. I hate waiting a year for the next Petit.
There were so many hopes that the property across the street (Lanier trash Raceway) would be purchased and provide needed support for parking, hotels and a landing strip but it never materialized. Panoz had a vision but is was never completed.
Ya, I know that some here would argue that it would destroy the "feel" of Road Atlanta. I just would like to see more real racing as opposed to exhibition. Additional revenue at the track being reinvested could greatly improve the fan experience. Hell, the only real improvement over the last few years has been the Michelin Tower and hot water in the bathrooms that sometimes works.