Cars are getting more and more expensive because of the COE. How about the air pollution, will it get worst with so many old cars or "problem" cars on the road because they can't afford to change to new cars. We understand that government is trying to encourage people to take public transports but for those who really need a car for their daily usage eg salesmen, property agents or maybe working parents with infants/young children etc, they have to stick to their old cars even though their cars might have some problems.