Auto major TATA Motors said that its global sales increased by 50% in May to 79,819 units on robust demand for both commercial and passenger vehicles. The company in a statement said that sales of luxury models from Jaguar Land Rover stood at 19,053 units during May, up 72% from the same period last year. While sales of Jaguar brand luxury sedans jumped by 34% last month to 5,120 units, Land Rover sales…