The government should care about the financial situation of his country, but at the same time it must care also about the enviroment and control pollution. Therefor increasing the expenditure on public trasportation can decrease air pollution, because if public trasports work people would use them instead of taking the car. Cars generate a lot of CO2 emissions, and this is one of the main reason of air pollution. A good transportation system would also help people in a economic way, because only individuals that need a car would buy it. Owning a car is really expensive especially nowadays, people have a lot of taxes to pay on it, the have to pay a mecanich if something doesn't work in the car, they have to pay insurance etc.