Or a big, empty parking lot to test high-speed drifting or set up an Autocross course.
Super Speedway is like Pocono (accourding to NASCAR drivers) because Super Speedway is set up more like a road course than an oval. You want something a bit more challenging in GT4 and make it an oval? Get Nazareth.
But for the most part, I tend to think that when it comes to ovals, two is company, three is a crowd. If I wanted a third oval, it would have to be an upgraded test track, not some other oval wanting any spotlight. I don't want Hickory. I don't want Martinsville. I sure as hell don't want Bristol. And the only other oval I'd want to see is a road course adjacent to the track, although I haven't seen a "roval" that is actually interesting (yes, even Daytona. 24 Hours wasted, espcially how Grand-Am is phonying-up sportscar racing. Most of their races are at ovals anyhow). Correction. I take back what I said about "no interesting "rovals." Motegi is about the best at using an oval, because they go underneath the oval and not on it. Plus the track is pretty cool.
But if you want more ovals, I'm not complaining. I'm just speaking my mind, as only an American can.