Anirudh Bhuwalka would have gone into the realty, software or entertainment business but for an uncle with a serendipitous idea: trucks. In 2004, ‘uncle’ Shashi Ruia, head of the $17-billion Essar Group, had just forayed into highway construction and ordered expensive Volvo trucks. “Why not make such trucks in India?” he wondered. “After all, what does it take to make a truck? An engine, a gear box, an axle — just put them together and you have a truck!”