Indian carmaker Tata Motors (a part of the Tata conglomerate) has for some time held out the possibility of developing a very low-cost budget car (codenamed X1) that would be within the purchasing reach of a large section of India's population that is currently on two wheels. Tata Group leader Ratan Tata has made it something of a personal project. But what sort of vehicle would it be and where are we now? Deepesh Rathore and Tilak Swarup report.