Each character in the film reperesents a certain class or group of people who commute daily in India.
1. office guy reperesents the working middle class. fuel is expensive and public transport is the only option. He is always late to work because of the untimely service and hence always irritable.
2. the old man represents the old commuters who still want to be independent and travel on their own.
3. the main " environment" guy represents the staunch environmentalists who will probably be the only ones to stand everything about the system just to save the environment.