As the second wave of COVID-19 left hospitals across Delhi overwhelmed hospitals, and people struggled to find oxygen, a retired submarine electrical engineer decided to step up to help those in need. He did so by providing oxygen in his car. Cdr Sardana and his wife, Archana Sardana, converted their own car into a small oxygen tanker. This could hold three jumbo cylinders with a total capacity of over 20,000 litres of oxygen. The couple reached out to those who were left helpless amid the second wave. So far, they have delivered oxygen to over 100 cylinders across the city.