Kathmandy began to change on the morning of September 18. As many as 640 diesel-run three wheelers that made Nepal's capital one of the most polluted cities in South Asia disappeared from the roads. The blue-bodied Vikram tempos, imported from India, had been visible across the roads of Kathmandu for long. The dark fumes emitted by the tempose made it easy for people to point a finger at them. They, however, continue to pollute many Indian tourist destinations.