Because both companies and citizens choose better place to work and have a house, at the cost of having to drive every day. The money you don't pay in rent, you

Because both companies and citizens choose better place to work and have a house, at the cost of having to drive every day. The money you don't pay in rent, you pay in gas. Also because the state and government doesn't plan for such things, so the result is large cities with many offices and spread out houses. I guess gas money could be saved on a very large scale if the government would try to encourage citizens to switch houses... maybe with some sort of tax break or something...