What makes the southern metro tick? A combination of factors, ranging from a growing market to the very nature of the men who run south Indian mega-businesses. Madras, for instance, is a great market for financial services aiming to mop up savings. The average Tamilian loves to save. "The per capita contribution of a Tamilian to bank deposits is Rs 3,371.40 as against the national average of Rs 3,239.60. This is when the state's net per capita income at Rs 4,428 is lower than the national per capita income of Rs 5,015," says R. Thyagarajan, chairman, Shriram group. New financial instruments and activities, therefore, have many takers.