The CRSCCA is holding a RallyCross event April 19th in Resaca Georgia(halfway between Chattanooga and Atlanta off I-75).
Go to Chattanooga SCCA's site for info and registration.

I will be there by 10am, and hope to see some other Celica owners. You can also rent a car to run if you don't want to hurt your baby.
Last time I went, there was a late 80's Corolla all dolled up for Rally. And there are always some nice cars present.