India's Tata Motors Ltd. today unveiled its new, low-cost car aimed at a growing middle class in India -- and potentially elsewhere in the developing world -- looking to move up the transportation ladder... In an interview, Mr. Tata said that while Tata Motors' new car, which is called the Nano, is smaller than most now on the market -- it is powered by a 623 cubic centimeter engine -- the four-door vehicle will have all the regular features of any passenger car. Tata plans next year to roll out about 200,000 units of the car, which cost $380 million...