i read a very interesting and useful article on saving oil by stopping the car engine.

but for india, i think we need to follow singapore model wherein the car owners will be,
1. charged a very small fee every year for environmental control
2. charged a nominal road use tax, because most of the times it is 1 per per car occuyping huge road space in the already narrow roads of india.
3. non-public transport usage fee, using which public transport drivers and conductors can be paid more which in turn will result in more efficient service.
4. many other steps that is unique to india.

cars are very much needed. but during peak hours (7 to 10 am;4 to 7 am) we need to bring car drivers under control and then only will our roads and air breathe clean and green.