How do you plan for a car? Do you even need one? Are car loans better than SIPs to fund a purchase? How can you upgrade your car without breaking the bank? Should you go for a top-end variant or a low-end one? In this edition of Big Decisions, Renuka Kirpalani, Consulting Editor at Autocar India and Mashable India, and Nikhil Kothari, Director at Etica Wealth, talk about what you need to keep in mind before buying a car.