Unofficially it was coming to CGL for more than 1 year daily for parking and water filling purpose. Now SR just made it as official that's all. No surprise at all. FYI Chennai limits has been expand upto CGL nowadays unofficially, many Telugu speaking people are settled in these areas too. One example is SRM college lots of students from Andhara are residing near to Tambaram and Chengalpattu areas.Other than that many IT companies and automobile companies are close to Tambaram and CGL areas. Sizable telugu speaking people will definitely make use of this extension.