Central Railway's muck train fleet, which includes old local trains and flat-bed wagons that collect garbage off the tracks every night, has managed to clean up the city's rail tracks across three routes like never before thanks to the lockdown. It has cleared as much as 40,000 cubic metres of garbage from around the tracks in the past three months.

The 'muck train' has been in the spotlight ever since Magsaysay Award winners Prakash Baba Amte and his wife Mandakini Amte successfully answered Amitabh Bachchan's question about it in last season's Kaun Banega Crorepati, winning Rs 25 lakh.