What is a "touring car?"

[Andy Bettencourt]

Core car yes, but never to exclude everything but 'touring cars'. TC's are 4 doors.

Edit: I'm not trying to be argumentative here Dr. K. I'm just trying to point out that Super 'Touring' O has sports cars and Super 'Touring' U is a displacement-based class with no limitations.

No place in the infancy of Super Touring (STO and STU) was the requirement to be a traditional touring-car written. STL is a subset of these classes and unless specifically exclusionary and incongruent to the parent classes, it would seem that it's a displacement class too.