Tata Motors has launched not just its Altroz premium hatchback but also facelifted versions of the Nexon, Tiago and Tigor. But that's not all - it also revealed that the Tiago and Tigor scored a high 4-star rating in Global NCAP crash tests, joining the Nexon and Altroz which both have a 5-star rating. We sit down with Rajendra Petkar, CTO of Tata Motors and David Ward, CEO of Global NCAP to talk about the importance of safety and what goes into making safer cars for India.