Every day is a race against time for A Marimuthu. Maneuvering through traffic, the sound of the siren overhead drowned by the relentless honking of impatient motorists and drivers on the road, the 43-yearold has to ensure the safety of the patient and others inside the ambulance he is driving.For Marimuthu, who has been an ambulance driver for the past 17 years, driving at breakneck speed through...