Part-by-part and day-by-day our Zen is going away from us. Remember Maruti Zen, the oldest model? It's a 15-year-old car I got married to, after my husband bought it as a young adult with his father's hard-earned money. We know it's going away because every month it needs to be upped, with a part needing replacement or some other dying permanently. The engine is coughing with over-use, protesting at every ignition now. Mysterious groans of ageing are heard through every trip.