They have come to rely on public services that were not available before and now they want to improve the quality of those services. Millions of Brazilians can now buy a car for the first time and can also travel by plane. The counterpart to that, however, should be decent and efficient public transportation to facilitate urban mobility and make life in the big cities less painful and stressful. The Gini coefficient is commonly used as a measure of inequality of income or wealth, where a coefficient of one means maximum inequality, and zero means total equality.