Riding high on the Indian success story of its Chevrolet brand, multi national auto major General Motors is looking at launching its premium and iconic Cadillac in the country soon. A top company official said that the Indian arm of the American auto giant General Motors currently sells eight sub brands under Chevrolet, Spark, Aveo UVA, Aveo, Optra, Tavera, Captiva, Cruze and the latest, the compact car…