Tata's sprawling industrial conglomerate has investments in energy, steel, hotels, and chemicals, and controls more than two dozen publicly traded companies. But it's Tata's automobile unit that lately has been creating all the buzz. On the low end, a larger model of its no-frills Nano -- no heat, top speed of 65 miles per hour, base price of $2,500 -- is being readied for release in the U.S. And sales of the high-end Jaguar and Land Rover brands have been reinvigorated. All the more reason Tata Motors stock is up 60% this year.
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