If by rickshaw you mean a human-pedaled cycle rickshaw will you take one for the five kilometers distance to your workplace or school every day ?

And think about the chaos of so many rickshaws which will be no different than the currently private cars and two-wheelers. And how will you convince someone currently driving an autorickshaw or a taxi to pedal a cycle rickshaw ?
As for pollution by petrol buses and taxis they at some point can be instead powered by the nuclear-waste carbon-14 radioactive battery called
Nano Diamond Battery which is currently under development and is designed to convert residual radioactivity to electricity. And then there is research on how to imitate the electricity-generating properties of the electric eel to power electric devices. Please read
this thread of mine.