Justin Rowlatt and Anita Rani embarked on an epic trip to India to learn how the booming automotive industry helped drive the country's massive economic growth. Starting from Delhi in the opposite direction, they have three weeks to reach Chennai in the south, where they will meet at the center of the Indian automotive industry. Anita drove a new Indian made 4x4 across thousands of miles of the country's new highways, while Justin rode an exhausted Hindustan ambassador eastward to investigate the dark side of this economic revolution. Two journeys full of color and chaos, charm and dirt, illustrate the birth of what some believe to be a new superpower.